diff --git a/readium/adapters/pspdfkit/document/src/main/java/org/readium/adapter/pspdfkit/document/PsPdfKitDocument.kt b/readium/adapters/pspdfkit/document/src/main/java/org/readium/adapter/pspdfkit/document/PsPdfKitDocument.kt
index 0ece69bba6..764a7bf4ff 100644
--- a/readium/adapters/pspdfkit/document/src/main/java/org/readium/adapter/pspdfkit/document/PsPdfKitDocument.kt
+++ b/readium/adapters/pspdfkit/document/src/main/java/org/readium/adapter/pspdfkit/document/PsPdfKitDocument.kt
@@ -21,7 +21,6 @@ import kotlin.reflect.KClass
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.withContext
 import org.readium.r2.shared.publication.ReadingProgression
-import org.readium.r2.shared.util.ThrowableError
 import org.readium.r2.shared.util.Try
 import org.readium.r2.shared.util.data.ReadError
 import org.readium.r2.shared.util.data.ReadTry
@@ -43,30 +42,16 @@ public class PsPdfKitDocumentFactory(context: Context) : PdfDocumentFactory<PsPd
                 val innerDocument = PdfDocumentLoader.openDocument(context, documentSource)
                 Try.success(PsPdfKitDocument(innerDocument))
             } catch (e: InvalidPasswordException) {
-                Try.failure(ReadError.Decoding(ThrowableError(e)))
+                Try.failure(ReadError.Decoding(e))
             } catch (e: InvalidSignatureException) {
-                Try.failure(ReadError.Decoding(ThrowableError(e)))
+                Try.failure(ReadError.Decoding(e))
             } catch (e: IOException) {
-                // For debugging purpose
-                dataProvider.error?.unwrapDebugException()
-                    ?.let { throw it }
-
                 dataProvider.error
                     ?.let { Try.failure(it) }
-                    ?: throw IllegalStateException(e)
+                    // Not a PDF or corrupted file.
+                    ?: Try.failure(ReadError.Decoding(e))
             }
         }
-
-    private fun ReadError.unwrapDebugException(): Throwable? {
-        if (this !is ReadError.UnsupportedOperation) {
-            return null
-        }
-
-        val throwableCause = (cause as? ThrowableError<*>)
-            ?: return null
-
-        return throwableCause.throwable as? IllegalStateException
-    }
 }
 
 public class PsPdfKitDocument(
diff --git a/readium/adapters/pspdfkit/document/src/main/java/org/readium/adapter/pspdfkit/document/ResourceDataProvider.kt b/readium/adapters/pspdfkit/document/src/main/java/org/readium/adapter/pspdfkit/document/ResourceDataProvider.kt
index bd05e4d714..ed6256f042 100644
--- a/readium/adapters/pspdfkit/document/src/main/java/org/readium/adapter/pspdfkit/document/ResourceDataProvider.kt
+++ b/readium/adapters/pspdfkit/document/src/main/java/org/readium/adapter/pspdfkit/document/ResourceDataProvider.kt
@@ -9,7 +9,6 @@ package org.readium.adapter.pspdfkit.document
 import com.pspdfkit.document.providers.DataProvider
 import java.util.UUID
 import kotlinx.coroutines.runBlocking
-import org.readium.r2.shared.util.ThrowableError
 import org.readium.r2.shared.util.data.ReadError
 import org.readium.r2.shared.util.getOrElse
 import org.readium.r2.shared.util.resource.Resource
@@ -30,17 +29,12 @@ internal class ResourceDataProvider(
 
     private val length by lazy {
         runBlocking {
-            try {
-                resource.length()
-                    .getOrElse {
-                        error = it
-                        onResourceError(it)
-                        DataProvider.FILE_SIZE_UNKNOWN.toLong()
-                    }
-            } catch (e: Exception) {
-                error = ReadError.UnsupportedOperation(ThrowableError(IllegalStateException(e)))
-                DataProvider.FILE_SIZE_UNKNOWN.toLong()
-            }
+            resource.length()
+                .getOrElse {
+                    error = it
+                    onResourceError(it)
+                    DataProvider.FILE_SIZE_UNKNOWN.toLong()
+                }
         }
     }
 
@@ -57,17 +51,12 @@ internal class ResourceDataProvider(
 
     override fun read(size: Long, offset: Long): ByteArray = runBlocking {
         val range = offset until (offset + size)
-        try {
-            resource.read(range)
-                .getOrElse {
-                    error = it
-                    onResourceError(it)
-                    DataProvider.NO_DATA_AVAILABLE
-                }
-        } catch (e: Exception) {
-            error = ReadError.UnsupportedOperation(ThrowableError(IllegalStateException(e)))
-            DataProvider.NO_DATA_AVAILABLE
-        }
+        resource.read(range)
+            .getOrElse {
+                error = it
+                onResourceError(it)
+                DataProvider.NO_DATA_AVAILABLE
+            }
     }
 
     override fun release() {