diff --git a/.gitattributes b/.gitattributes
index fa93c6a1..9c0107fc 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,3 +1,4 @@
 * text eol=lf
 *.bat text eol=crlf
 *.jar binary
+*.wasm binary
diff --git a/chasm/src/commonMain/kotlin/io/github/charlietap/chasm/embedding/Instance.kt b/chasm/src/commonMain/kotlin/io/github/charlietap/chasm/embedding/Instance.kt
index 66508fe8..e9ff21f2 100644
--- a/chasm/src/commonMain/kotlin/io/github/charlietap/chasm/embedding/Instance.kt
+++ b/chasm/src/commonMain/kotlin/io/github/charlietap/chasm/embedding/Instance.kt
@@ -37,7 +37,7 @@ internal fun instance(
     importMatcher: ImportMatcher,
     instantiator: ModuleInstantiator,
 ): ChasmResult<ModuleInstance, ChasmError.ExecutionError> {
-    val orderedImports = importMatcher(module, imports).component1()
+    val orderedImports = importMatcher(store, module, imports).component1()
         ?: return Error(ChasmError.ExecutionError(InstantiationError.MissingImport))
     return instantiator(store, module, orderedImports)
         .mapError(ChasmError::ExecutionError)
diff --git a/chasm/src/commonMain/kotlin/io/github/charlietap/chasm/import/FunctionImportMatcher.kt b/chasm/src/commonMain/kotlin/io/github/charlietap/chasm/import/FunctionImportMatcher.kt
new file mode 100644
index 00000000..88ca0c3a
--- /dev/null
+++ b/chasm/src/commonMain/kotlin/io/github/charlietap/chasm/import/FunctionImportMatcher.kt
@@ -0,0 +1,10 @@
+package io.github.charlietap.chasm.import
+
+import com.github.michaelbull.result.Result
+import io.github.charlietap.chasm.ast.module.Import
+import io.github.charlietap.chasm.ast.module.Module
+import io.github.charlietap.chasm.executor.runtime.error.ModuleTrapError
+import io.github.charlietap.chasm.executor.runtime.instance.ExternalValue
+import io.github.charlietap.chasm.executor.runtime.store.Store
+
+internal typealias FunctionImportMatcher = (Store, Module, Import.Descriptor.Function, ExternalValue.Function) -> Result<Boolean, ModuleTrapError>
diff --git a/chasm/src/commonMain/kotlin/io/github/charlietap/chasm/import/FunctionImportMatcherImpl.kt b/chasm/src/commonMain/kotlin/io/github/charlietap/chasm/import/FunctionImportMatcherImpl.kt
new file mode 100644
index 00000000..e9e93726
--- /dev/null
+++ b/chasm/src/commonMain/kotlin/io/github/charlietap/chasm/import/FunctionImportMatcherImpl.kt
@@ -0,0 +1,27 @@
+package io.github.charlietap.chasm.import
+
+import com.github.michaelbull.result.Result
+import com.github.michaelbull.result.binding
+import io.github.charlietap.chasm.ast.module.Module
+import io.github.charlietap.chasm.executor.runtime.error.ModuleTrapError
+import io.github.charlietap.chasm.executor.runtime.ext.function
+import io.github.charlietap.chasm.executor.runtime.instance.ExternalValue
+import io.github.charlietap.chasm.executor.runtime.store.Store
+import io.github.charlietap.chasm.executor.type.ext.definedType
+import io.github.charlietap.chasm.executor.type.ext.functionType
+import io.github.charlietap.chasm.ast.module.Import as ModuleImport
+
+internal fun FunctionImportMatcherImpl(
+    store: Store,
+    module: Module,
+    descriptor: ModuleImport.Descriptor.Function,
+    import: ExternalValue.Function,
+): Result<Boolean, ModuleTrapError> = binding {
+    val actualFunction = store.function(import.address).bind()
+    val actualFunctionType = actualFunction.functionType()
+
+    val requiredImportType = module.types[descriptor.typeIndex.idx.toInt()]
+    val requiredFunctionType = requiredImportType.recursiveType.definedType().functionType()
+
+    requiredFunctionType == actualFunctionType
+}
diff --git a/chasm/src/commonMain/kotlin/io/github/charlietap/chasm/import/GlobalImportMatcher.kt b/chasm/src/commonMain/kotlin/io/github/charlietap/chasm/import/GlobalImportMatcher.kt
new file mode 100644
index 00000000..20fa086d
--- /dev/null
+++ b/chasm/src/commonMain/kotlin/io/github/charlietap/chasm/import/GlobalImportMatcher.kt
@@ -0,0 +1,9 @@
+package io.github.charlietap.chasm.import
+
+import com.github.michaelbull.result.Result
+import io.github.charlietap.chasm.ast.module.Import
+import io.github.charlietap.chasm.executor.runtime.error.ModuleTrapError
+import io.github.charlietap.chasm.executor.runtime.instance.ExternalValue
+import io.github.charlietap.chasm.executor.runtime.store.Store
+
+internal typealias GlobalImportMatcher = (Store, Import.Descriptor.Global, ExternalValue.Global) -> Result<Boolean, ModuleTrapError>
diff --git a/chasm/src/commonMain/kotlin/io/github/charlietap/chasm/import/GlobalImportMatcherImpl.kt b/chasm/src/commonMain/kotlin/io/github/charlietap/chasm/import/GlobalImportMatcherImpl.kt
new file mode 100644
index 00000000..a7b5421d
--- /dev/null
+++ b/chasm/src/commonMain/kotlin/io/github/charlietap/chasm/import/GlobalImportMatcherImpl.kt
@@ -0,0 +1,22 @@
+package io.github.charlietap.chasm.import
+
+import com.github.michaelbull.result.Result
+import com.github.michaelbull.result.binding
+import io.github.charlietap.chasm.executor.runtime.error.ModuleTrapError
+import io.github.charlietap.chasm.executor.runtime.ext.global
+import io.github.charlietap.chasm.executor.runtime.instance.ExternalValue
+import io.github.charlietap.chasm.executor.runtime.store.Store
+import io.github.charlietap.chasm.ast.module.Import as ModuleImport
+
+internal fun GlobalImportMatcherImpl(
+    store: Store,
+    descriptor: ModuleImport.Descriptor.Global,
+    import: ExternalValue.Global,
+): Result<Boolean, ModuleTrapError> = binding {
+    val actualGlobal = store.global(import.address).bind()
+    val actualGlobalType = actualGlobal.type
+
+    val requiredGlobalType = descriptor.type
+
+    requiredGlobalType == actualGlobalType
+}
diff --git a/chasm/src/commonMain/kotlin/io/github/charlietap/chasm/import/ImportDescriptorMatcher.kt b/chasm/src/commonMain/kotlin/io/github/charlietap/chasm/import/ImportDescriptorMatcher.kt
new file mode 100644
index 00000000..4a6ad9e2
--- /dev/null
+++ b/chasm/src/commonMain/kotlin/io/github/charlietap/chasm/import/ImportDescriptorMatcher.kt
@@ -0,0 +1,10 @@
+package io.github.charlietap.chasm.import
+
+import com.github.michaelbull.result.Result
+import io.github.charlietap.chasm.ast.module.Module
+import io.github.charlietap.chasm.executor.runtime.error.ModuleTrapError
+import io.github.charlietap.chasm.executor.runtime.instance.ExternalValue
+import io.github.charlietap.chasm.executor.runtime.store.Store
+import io.github.charlietap.chasm.ast.module.Import as ModuleImport
+
+internal typealias ImportDescriptorMatcher = (Store, Module, ModuleImport.Descriptor, ExternalValue) -> Result<Boolean, ModuleTrapError>
diff --git a/chasm/src/commonMain/kotlin/io/github/charlietap/chasm/import/ImportDescriptorMatcherImpl.kt b/chasm/src/commonMain/kotlin/io/github/charlietap/chasm/import/ImportDescriptorMatcherImpl.kt
new file mode 100644
index 00000000..a5326c1b
--- /dev/null
+++ b/chasm/src/commonMain/kotlin/io/github/charlietap/chasm/import/ImportDescriptorMatcherImpl.kt
@@ -0,0 +1,53 @@
+package io.github.charlietap.chasm.import
+
+import com.github.michaelbull.result.Result
+import com.github.michaelbull.result.binding
+import io.github.charlietap.chasm.ast.module.Module
+import io.github.charlietap.chasm.executor.runtime.error.ModuleTrapError
+import io.github.charlietap.chasm.executor.runtime.instance.ExternalValue
+import io.github.charlietap.chasm.executor.runtime.store.Store
+import io.github.charlietap.chasm.ast.module.Import as ModuleImport
+
+internal fun ImportDescriptorMatcherImpl(
+    store: Store,
+    module: Module,
+    descriptor: ModuleImport.Descriptor,
+    externalValue: ExternalValue,
+): Result<Boolean, ModuleTrapError> =
+    ImportDescriptorMatcherImpl(
+        store = store,
+        module = module,
+        descriptor = descriptor,
+        externalValue = externalValue,
+        functionImportMatcher = ::FunctionImportMatcherImpl,
+        tableImportMatcher = ::TableImportMatcherImpl,
+        memoryImportMatcher = ::MemoryImportMatcherImpl,
+        globalImportMatcher = ::GlobalImportMatcherImpl,
+    )
+
+internal fun ImportDescriptorMatcherImpl(
+    store: Store,
+    module: Module,
+    descriptor: ModuleImport.Descriptor,
+    externalValue: ExternalValue,
+    functionImportMatcher: FunctionImportMatcher,
+    tableImportMatcher: TableImportMatcher,
+    memoryImportMatcher: MemoryImportMatcher,
+    globalImportMatcher: GlobalImportMatcher,
+): Result<Boolean, ModuleTrapError> = binding {
+    when {
+        descriptor is ModuleImport.Descriptor.Function && externalValue is ExternalValue.Function -> {
+            functionImportMatcher(store, module, descriptor, externalValue).bind()
+        }
+        descriptor is ModuleImport.Descriptor.Table && externalValue is ExternalValue.Table -> {
+            tableImportMatcher(store, descriptor, externalValue).bind()
+        }
+        descriptor is ModuleImport.Descriptor.Memory && externalValue is ExternalValue.Memory -> {
+            memoryImportMatcher(store, descriptor, externalValue).bind()
+        }
+        descriptor is ModuleImport.Descriptor.Global && externalValue is ExternalValue.Global -> {
+            globalImportMatcher(store, descriptor, externalValue).bind()
+        }
+        else -> false
+    }
+}
diff --git a/chasm/src/commonMain/kotlin/io/github/charlietap/chasm/import/ImportMatcher.kt b/chasm/src/commonMain/kotlin/io/github/charlietap/chasm/import/ImportMatcher.kt
index 83e5ddc7..1506eedf 100644
--- a/chasm/src/commonMain/kotlin/io/github/charlietap/chasm/import/ImportMatcher.kt
+++ b/chasm/src/commonMain/kotlin/io/github/charlietap/chasm/import/ImportMatcher.kt
@@ -2,7 +2,8 @@ package io.github.charlietap.chasm.import
 
 import com.github.michaelbull.result.Result
 import io.github.charlietap.chasm.ast.module.Module
-import io.github.charlietap.chasm.executor.runtime.error.InstantiationError
+import io.github.charlietap.chasm.executor.runtime.error.ModuleTrapError
 import io.github.charlietap.chasm.executor.runtime.instance.ExternalValue
+import io.github.charlietap.chasm.executor.runtime.store.Store
 
-internal typealias ImportMatcher = (Module, List<Import>) -> Result<List<ExternalValue>, InstantiationError>
+internal typealias ImportMatcher = (Store, Module, List<Import>) -> Result<List<ExternalValue>, ModuleTrapError>
diff --git a/chasm/src/commonMain/kotlin/io/github/charlietap/chasm/import/ImportMatcherImpl.kt b/chasm/src/commonMain/kotlin/io/github/charlietap/chasm/import/ImportMatcherImpl.kt
index 7224b727..12887444 100644
--- a/chasm/src/commonMain/kotlin/io/github/charlietap/chasm/import/ImportMatcherImpl.kt
+++ b/chasm/src/commonMain/kotlin/io/github/charlietap/chasm/import/ImportMatcherImpl.kt
@@ -1,34 +1,37 @@
 package io.github.charlietap.chasm.import
 
 import com.github.michaelbull.result.Err
-import com.github.michaelbull.result.Ok
 import com.github.michaelbull.result.Result
+import com.github.michaelbull.result.binding
 import io.github.charlietap.chasm.ast.module.Module
 import io.github.charlietap.chasm.executor.runtime.error.InstantiationError
+import io.github.charlietap.chasm.executor.runtime.error.ModuleTrapError
 import io.github.charlietap.chasm.executor.runtime.instance.ExternalValue
-import io.github.charlietap.chasm.ast.module.Import as ModuleImport
+import io.github.charlietap.chasm.executor.runtime.store.Store
 
 internal fun ImportMatcherImpl(
+    store: Store,
     module: Module,
     imports: List<Import>,
-): Result<List<ExternalValue>, InstantiationError> {
-    return module.imports.map { moduleImport ->
+): Result<List<ExternalValue>, ModuleTrapError> =
+    ImportMatcherImpl(
+        store = store,
+        module = module,
+        imports = imports,
+        descriptorMatcher = ::ImportDescriptorMatcherImpl,
+    )
+
+internal fun ImportMatcherImpl(
+    store: Store,
+    module: Module,
+    imports: List<Import>,
+    descriptorMatcher: ImportDescriptorMatcher,
+): Result<List<ExternalValue>, ModuleTrapError> = binding {
+    module.imports.map { moduleImport ->
         imports.firstOrNull { import ->
             moduleImport.moduleName.name == import.moduleName &&
                 moduleImport.entityName.name == import.entityName &&
-                descriptorMatcher(moduleImport.descriptor, import.value)
-        }?.value ?: return Err(InstantiationError.MissingImport)
-    }.let(::Ok)
-}
-
-private fun descriptorMatcher(
-    descriptor: ModuleImport.Descriptor,
-    externalValue: ExternalValue,
-): Boolean {
-    return when (descriptor) {
-        is ModuleImport.Descriptor.Function -> externalValue is ExternalValue.Function
-        is ModuleImport.Descriptor.Table -> externalValue is ExternalValue.Table
-        is ModuleImport.Descriptor.Memory -> externalValue is ExternalValue.Memory
-        is ModuleImport.Descriptor.Global -> externalValue is ExternalValue.Global
+                descriptorMatcher(store, module, moduleImport.descriptor, import.value).bind()
+        }?.value ?: Err(InstantiationError.MissingImport).bind()
     }
 }
diff --git a/chasm/src/commonMain/kotlin/io/github/charlietap/chasm/import/LimitsMatcher.kt b/chasm/src/commonMain/kotlin/io/github/charlietap/chasm/import/LimitsMatcher.kt
new file mode 100644
index 00000000..f91359f7
--- /dev/null
+++ b/chasm/src/commonMain/kotlin/io/github/charlietap/chasm/import/LimitsMatcher.kt
@@ -0,0 +1,5 @@
+package io.github.charlietap.chasm.import
+
+import io.github.charlietap.chasm.ast.type.Limits
+
+internal typealias LimitsMatcher = (Limits, Limits) -> Boolean
diff --git a/chasm/src/commonMain/kotlin/io/github/charlietap/chasm/import/LimitsMatcherImpl.kt b/chasm/src/commonMain/kotlin/io/github/charlietap/chasm/import/LimitsMatcherImpl.kt
new file mode 100644
index 00000000..e6ecfd4f
--- /dev/null
+++ b/chasm/src/commonMain/kotlin/io/github/charlietap/chasm/import/LimitsMatcherImpl.kt
@@ -0,0 +1,18 @@
+package io.github.charlietap.chasm.import
+
+import io.github.charlietap.chasm.ast.type.Limits
+
+internal fun LimitsMatcherImpl(
+    first: Limits,
+    second: Limits,
+): Boolean {
+    return if (first.min >= second.min) {
+        if (second.max == null) {
+            true
+        } else {
+            first.max != null && first.max!! <= second.max!!
+        }
+    } else {
+        false
+    }
+}
diff --git a/chasm/src/commonMain/kotlin/io/github/charlietap/chasm/import/MemoryImportMatcher.kt b/chasm/src/commonMain/kotlin/io/github/charlietap/chasm/import/MemoryImportMatcher.kt
new file mode 100644
index 00000000..7471ea32
--- /dev/null
+++ b/chasm/src/commonMain/kotlin/io/github/charlietap/chasm/import/MemoryImportMatcher.kt
@@ -0,0 +1,9 @@
+package io.github.charlietap.chasm.import
+
+import com.github.michaelbull.result.Result
+import io.github.charlietap.chasm.ast.module.Import
+import io.github.charlietap.chasm.executor.runtime.error.ModuleTrapError
+import io.github.charlietap.chasm.executor.runtime.instance.ExternalValue
+import io.github.charlietap.chasm.executor.runtime.store.Store
+
+internal typealias MemoryImportMatcher = (Store, Import.Descriptor.Memory, ExternalValue.Memory) -> Result<Boolean, ModuleTrapError>
diff --git a/chasm/src/commonMain/kotlin/io/github/charlietap/chasm/import/MemoryImportMatcherImpl.kt b/chasm/src/commonMain/kotlin/io/github/charlietap/chasm/import/MemoryImportMatcherImpl.kt
new file mode 100644
index 00000000..6395e4e0
--- /dev/null
+++ b/chasm/src/commonMain/kotlin/io/github/charlietap/chasm/import/MemoryImportMatcherImpl.kt
@@ -0,0 +1,35 @@
+package io.github.charlietap.chasm.import
+
+import com.github.michaelbull.result.Result
+import com.github.michaelbull.result.binding
+import io.github.charlietap.chasm.executor.runtime.error.ModuleTrapError
+import io.github.charlietap.chasm.executor.runtime.ext.memory
+import io.github.charlietap.chasm.executor.runtime.instance.ExternalValue
+import io.github.charlietap.chasm.executor.runtime.store.Store
+import io.github.charlietap.chasm.ast.module.Import as ModuleImport
+
+internal fun MemoryImportMatcherImpl(
+    store: Store,
+    descriptor: ModuleImport.Descriptor.Memory,
+    import: ExternalValue.Memory,
+): Result<Boolean, ModuleTrapError> =
+    MemoryImportMatcherImpl(
+        store = store,
+        descriptor = descriptor,
+        import = import,
+        limitsMatcher = ::LimitsMatcherImpl,
+    )
+
+internal fun MemoryImportMatcherImpl(
+    store: Store,
+    descriptor: ModuleImport.Descriptor.Memory,
+    import: ExternalValue.Memory,
+    limitsMatcher: LimitsMatcher,
+): Result<Boolean, ModuleTrapError> = binding {
+    val actualMemory = store.memory(import.address).bind()
+    val actualMemoryType = actualMemory.type
+
+    val requiredMemoryType = descriptor.type
+
+    limitsMatcher(actualMemoryType.limits, requiredMemoryType.limits)
+}
diff --git a/chasm/src/commonMain/kotlin/io/github/charlietap/chasm/import/TableImportMatcher.kt b/chasm/src/commonMain/kotlin/io/github/charlietap/chasm/import/TableImportMatcher.kt
new file mode 100644
index 00000000..2b5718ee
--- /dev/null
+++ b/chasm/src/commonMain/kotlin/io/github/charlietap/chasm/import/TableImportMatcher.kt
@@ -0,0 +1,9 @@
+package io.github.charlietap.chasm.import
+
+import com.github.michaelbull.result.Result
+import io.github.charlietap.chasm.ast.module.Import
+import io.github.charlietap.chasm.executor.runtime.error.ModuleTrapError
+import io.github.charlietap.chasm.executor.runtime.instance.ExternalValue
+import io.github.charlietap.chasm.executor.runtime.store.Store
+
+internal typealias TableImportMatcher = (Store, Import.Descriptor.Table, ExternalValue.Table) -> Result<Boolean, ModuleTrapError>
diff --git a/chasm/src/commonMain/kotlin/io/github/charlietap/chasm/import/TableImportMatcherImpl.kt b/chasm/src/commonMain/kotlin/io/github/charlietap/chasm/import/TableImportMatcherImpl.kt
new file mode 100644
index 00000000..d98c15c0
--- /dev/null
+++ b/chasm/src/commonMain/kotlin/io/github/charlietap/chasm/import/TableImportMatcherImpl.kt
@@ -0,0 +1,36 @@
+package io.github.charlietap.chasm.import
+
+import com.github.michaelbull.result.Result
+import com.github.michaelbull.result.binding
+import io.github.charlietap.chasm.executor.runtime.error.ModuleTrapError
+import io.github.charlietap.chasm.executor.runtime.ext.table
+import io.github.charlietap.chasm.executor.runtime.instance.ExternalValue
+import io.github.charlietap.chasm.executor.runtime.store.Store
+import io.github.charlietap.chasm.ast.module.Import as ModuleImport
+
+internal fun TableImportMatcherImpl(
+    store: Store,
+    descriptor: ModuleImport.Descriptor.Table,
+    import: ExternalValue.Table,
+): Result<Boolean, ModuleTrapError> =
+    TableImportMatcherImpl(
+        store = store,
+        descriptor = descriptor,
+        import = import,
+        limitsMatcher = ::LimitsMatcherImpl,
+    )
+
+internal fun TableImportMatcherImpl(
+    store: Store,
+    descriptor: ModuleImport.Descriptor.Table,
+    import: ExternalValue.Table,
+    limitsMatcher: LimitsMatcher,
+): Result<Boolean, ModuleTrapError> = binding {
+    val actualTable = store.table(import.address).bind()
+    val actualTableType = actualTable.type
+
+    val requiredTableType = descriptor.type
+
+    requiredTableType.referenceType == actualTableType.referenceType &&
+        limitsMatcher(actualTableType.limits, requiredTableType.limits)
+}
diff --git a/chasm/src/commonTest/kotlin/io/github/charlietap/chasm/script/command/AssertUnlinkableCommandRunner.kt b/chasm/src/commonTest/kotlin/io/github/charlietap/chasm/script/command/AssertUnlinkableCommandRunner.kt
index d4a372ad..c17ba1db 100644
--- a/chasm/src/commonTest/kotlin/io/github/charlietap/chasm/script/command/AssertUnlinkableCommandRunner.kt
+++ b/chasm/src/commonTest/kotlin/io/github/charlietap/chasm/script/command/AssertUnlinkableCommandRunner.kt
@@ -1,13 +1,27 @@
 package io.github.charlietap.chasm.script.command
 
+import io.github.charlietap.chasm.embedding.instance
+import io.github.charlietap.chasm.embedding.module
+import io.github.charlietap.chasm.flatMap
+import io.github.charlietap.chasm.fold
+import io.github.charlietap.chasm.script.ScriptContext
+import io.github.charlietap.chasm.script.ext.readBytesFromPath
 import io.github.charlietap.sweet.lib.command.AssertUnlinkableCommand
 
-typealias AssertUnlinkableCommandRunner = (AssertUnlinkableCommand) -> CommandResult
+typealias AssertUnlinkableCommandRunner = (ScriptContext, AssertUnlinkableCommand) -> CommandResult
 
-@Suppress("UNUSED_PARAMETER")
 fun AssertUnlinkableCommandRunner(
+    context: ScriptContext,
     command: AssertUnlinkableCommand,
 ): CommandResult {
-    println("ignoring AssertUnlinkableCommand")
-    return CommandResult.Success
+    val moduleFilePath = context.binaryDirectory + "/" + command.filename
+    val bytes = moduleFilePath.readBytesFromPath()
+
+    return module(bytes).flatMap { module ->
+        instance(context.store, module, context.imports)
+    }.fold({ _ ->
+        CommandResult.Failure(command, "unlinkable module was instantiated when it should have failed")
+    }) {
+        CommandResult.Success
+    }
 }
diff --git a/chasm/src/commonTest/kotlin/io/github/charlietap/chasm/script/command/CommandRunner.kt b/chasm/src/commonTest/kotlin/io/github/charlietap/chasm/script/command/CommandRunner.kt
index 902eddbd..3afd85cc 100644
--- a/chasm/src/commonTest/kotlin/io/github/charlietap/chasm/script/command/CommandRunner.kt
+++ b/chasm/src/commonTest/kotlin/io/github/charlietap/chasm/script/command/CommandRunner.kt
@@ -54,7 +54,7 @@ private fun CommandRunner(
     is AssertReturnCommand -> assertReturnCommandRunner(context, command)
     is AssertTrapCommand -> assertTrapCommandRunner(context, command)
     is AssertUninstantiableCommand -> assertUninstantiableCommandRunner(context, command)
-    is AssertUnlinkableCommand -> assertUnlinkableCommandRunner(command)
+    is AssertUnlinkableCommand -> assertUnlinkableCommandRunner(context, command)
     is ModuleCommand -> moduleCommandRunner(context, command)
     is RegisterCommand -> registerCommandRunner(context, command)
 }
diff --git a/chasm/src/commonTest/resources/script/spectest-host.wasm b/chasm/src/commonTest/resources/script/spectest-host.wasm
index 179d627f..e7c22aa9 100644
Binary files a/chasm/src/commonTest/resources/script/spectest-host.wasm and b/chasm/src/commonTest/resources/script/spectest-host.wasm differ
diff --git a/chasm/src/commonTest/resources/script/spectest-host.wat b/chasm/src/commonTest/resources/script/spectest-host.wat
index 9f649819..af3f3350 100644
--- a/chasm/src/commonTest/resources/script/spectest-host.wat
+++ b/chasm/src/commonTest/resources/script/spectest-host.wat
@@ -1,8 +1,8 @@
 (module
-  (global $global_i32 (export "global_i32") (mut i32) (i32.const 666))
-  (global $global_i64 (export "global_i64") (mut i64) (i64.const 666))
-  (global $global_f32 (export "global_f32") (mut f32) (f32.const 666.6))
-  (global $global_f64 (export "global_f64") (mut f64) (f64.const 666.6))
+  (global $global_i32 (export "global_i32") i32 (i32.const 666))
+  (global $global_i64 (export "global_i64") i64 (i64.const 666))
+  (global $global_f32 (export "global_f32") f32 (f32.const 666.6))
+  (global $global_f64 (export "global_f64") f64 (f64.const 666.6))
 
   (table (export "table") 10 20 funcref)