diff --git a/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrMemberAccessExpression.kt b/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrMemberAccessExpression.kt
index 8f5443afce68e..8f385898ab79c 100644
--- a/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrMemberAccessExpression.kt
+++ b/compiler/ir/ir.tree/gen/org/jetbrains/kotlin/ir/expressions/IrMemberAccessExpression.kt
@@ -26,7 +26,7 @@ abstract class IrMemberAccessExpression<S : IrSymbol> : IrDeclarationReference()
 
     abstract override val symbol: S
 
-    abstract val origin: IrStatementOrigin?
+    abstract var origin: IrStatementOrigin?
 
     protected abstract val valueArguments: Array<IrExpression?>
 
diff --git a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrCallImpl.kt b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrCallImpl.kt
index 99209db6cc434..903fba993dc3b 100644
--- a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrCallImpl.kt
+++ b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrCallImpl.kt
@@ -34,7 +34,7 @@ class IrCallImpl(
     override val symbol: IrSimpleFunctionSymbol,
     typeArgumentsCount: Int,
     valueArgumentsCount: Int,
-    override val origin: IrStatementOrigin? = null,
+    override var origin: IrStatementOrigin? = null,
     override var superQualifierSymbol: IrClassSymbol? = null
 ) : IrCall() {
 
diff --git a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrConstructorCallImpl.kt b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrConstructorCallImpl.kt
index 9c4e5924cfff9..182b6a2b55a8c 100644
--- a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrConstructorCallImpl.kt
+++ b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrConstructorCallImpl.kt
@@ -23,7 +23,7 @@ class IrConstructorCallImpl(
     typeArgumentsCount: Int,
     override var constructorTypeArgumentsCount: Int,
     valueArgumentsCount: Int,
-    override val origin: IrStatementOrigin? = null,
+    override var origin: IrStatementOrigin? = null,
     override var source: SourceElement = SourceElement.NO_SOURCE
 ) : IrConstructorCall() {
     override val typeArguments: Array<IrType?> = arrayOfNulls(typeArgumentsCount)
diff --git a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrDelegatingConstructorCallImpl.kt b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrDelegatingConstructorCallImpl.kt
index 1996d1d91fec0..ec5623fa2f0a6 100644
--- a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrDelegatingConstructorCallImpl.kt
+++ b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrDelegatingConstructorCallImpl.kt
@@ -33,8 +33,7 @@ class IrDelegatingConstructorCallImpl(
     typeArgumentsCount: Int,
     valueArgumentsCount: Int,
 ) : IrDelegatingConstructorCall() {
-    override val origin: IrStatementOrigin?
-        get() = null
+    override var origin: IrStatementOrigin? = null
 
     override val typeArguments: Array<IrType?> = arrayOfNulls(typeArgumentsCount)
 
diff --git a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrEnumConstructorCallImpl.kt b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrEnumConstructorCallImpl.kt
index 887b981331050..91e047a37710a 100644
--- a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrEnumConstructorCallImpl.kt
+++ b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrEnumConstructorCallImpl.kt
@@ -31,8 +31,7 @@ class IrEnumConstructorCallImpl(
     typeArgumentsCount: Int,
     valueArgumentsCount: Int
 ) : IrEnumConstructorCall() {
-    override val origin: IrStatementOrigin?
-        get() = null
+    override var origin: IrStatementOrigin? = null
 
     override val typeArguments: Array<IrType?> = arrayOfNulls(typeArgumentsCount)
 
diff --git a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrFunctionReferenceImpl.kt b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrFunctionReferenceImpl.kt
index adb24127f3243..c84cec8593cdc 100644
--- a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrFunctionReferenceImpl.kt
+++ b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrFunctionReferenceImpl.kt
@@ -31,7 +31,7 @@ class IrFunctionReferenceImpl(
     typeArgumentsCount: Int,
     valueArgumentsCount: Int,
     override var reflectionTarget: IrFunctionSymbol? = symbol,
-    override val origin: IrStatementOrigin? = null,
+    override var origin: IrStatementOrigin? = null,
 ) : IrFunctionReference() {
     override val typeArguments: Array<IrType?> = arrayOfNulls(typeArgumentsCount)
 
diff --git a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrLocalDelegatedPropertyReferenceImpl.kt b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrLocalDelegatedPropertyReferenceImpl.kt
index 3c6436840a568..1758c97c3ff6e 100644
--- a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrLocalDelegatedPropertyReferenceImpl.kt
+++ b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrLocalDelegatedPropertyReferenceImpl.kt
@@ -32,7 +32,7 @@ class IrLocalDelegatedPropertyReferenceImpl(
     override var delegate: IrVariableSymbol,
     override var getter: IrSimpleFunctionSymbol,
     override var setter: IrSimpleFunctionSymbol?,
-    override val origin: IrStatementOrigin? = null,
+    override var origin: IrStatementOrigin? = null,
 ) : IrLocalDelegatedPropertyReference() {
     override val typeArguments: Array<IrType?>
         get() = EMPTY_TYPE_ARGUMENTS
diff --git a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrPropertyReferenceImpl.kt b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrPropertyReferenceImpl.kt
index 1509897aa3a0d..7475d364b0b83 100644
--- a/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrPropertyReferenceImpl.kt
+++ b/compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrPropertyReferenceImpl.kt
@@ -33,7 +33,7 @@ class IrPropertyReferenceImpl(
     override var field: IrFieldSymbol?,
     override var getter: IrSimpleFunctionSymbol?,
     override var setter: IrSimpleFunctionSymbol?,
-    override val origin: IrStatementOrigin? = null,
+    override var origin: IrStatementOrigin? = null,
 ) : IrPropertyReference() {
     override val typeArguments: Array<IrType?> = arrayOfNulls(typeArgumentsCount)
 
diff --git a/compiler/ir/ir.tree/tree-generator/src/org/jetbrains/kotlin/ir/generator/IrTree.kt b/compiler/ir/ir.tree/tree-generator/src/org/jetbrains/kotlin/ir/generator/IrTree.kt
index 300cb233b2d46..18562deb5439a 100644
--- a/compiler/ir/ir.tree/tree-generator/src/org/jetbrains/kotlin/ir/generator/IrTree.kt
+++ b/compiler/ir/ir.tree/tree-generator/src/org/jetbrains/kotlin/ir/generator/IrTree.kt
@@ -608,7 +608,7 @@ object IrTree : AbstractTreeBuilder() {
             baseDefaultValue = code("null")
         }
         +symbol(s)
-        +field("origin", statementOriginType, nullable = true, mutable = false)
+        +field("origin", statementOriginType, nullable = true)
         +listField("valueArguments", expression.copy(nullable = true), mutability = Array, isChild = true) {
             generationCallback = {
                 addModifiers(KModifier.PROTECTED)