diff --git a/compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/descriptors/WrappedDescriptors.kt b/compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/descriptors/WrappedDescriptors.kt
index 6bdeec6edc1..ab60545d2da 100644
--- a/compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/descriptors/WrappedDescriptors.kt
+++ b/compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/descriptors/WrappedDescriptors.kt
@@ -272,6 +272,14 @@ open class WrappedSimpleFunctionDescriptor(
     annotations: Annotations = Annotations.EMPTY,
     sourceElement: SourceElement = SourceElement.NO_SOURCE
 ) : SimpleFunctionDescriptor, WrappedCallableDescriptor<IrSimpleFunction>(annotations, sourceElement) {
+
+    // TODO: Remove as soon as all IR declarations have their originalDescriptor.
+    constructor(originalDescriptor: FunctionDescriptor) : this(originalDescriptor.annotations, originalDescriptor.source) {
+        this.originalDescriptor = originalDescriptor
+    }
+
+    var originalDescriptor: FunctionDescriptor? = null
+
     override fun getOverriddenDescriptors() = owner.overriddenSymbols.map { it.descriptor }
     override fun getContainingDeclaration() = (owner.parent as IrSymbolOwner).symbol.descriptor
     override fun getModality() = owner.modality
@@ -810,7 +818,8 @@ open class WrappedFieldDescriptor(
 
     override fun isLateInit() = owner.correspondingProperty?.isLateinit ?: false
 
-    override fun getExtensionReceiverParameter(): ReceiverParameterDescriptor? = owner.correspondingProperty?.descriptor?.extensionReceiverParameter
+    override fun getExtensionReceiverParameter(): ReceiverParameterDescriptor? =
+        owner.correspondingProperty?.descriptor?.extensionReceiverParameter
 
     override fun isExternal() = owner.isExternal
 
diff --git a/compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/lower/LocalDeclarationsLowering.kt b/compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/lower/LocalDeclarationsLowering.kt
index dfe9581e99c..e8b036f5369 100644
--- a/compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/lower/LocalDeclarationsLowering.kt
+++ b/compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/lower/LocalDeclarationsLowering.kt
@@ -493,7 +493,7 @@ class LocalDeclarationsLowering(
             val oldDeclaration = localFunctionContext.declaration as IrSimpleFunction
 
             val memberOwner = memberDeclaration.parent
-            val newDescriptor = WrappedSimpleFunctionDescriptor(oldDeclaration.descriptor.annotations, oldDeclaration.descriptor.source)
+            val newDescriptor = WrappedSimpleFunctionDescriptor(oldDeclaration.descriptor)
             val newSymbol = IrSimpleFunctionSymbolImpl(newDescriptor)
             val newName = generateNameForLiftedDeclaration(oldDeclaration, memberOwner)