diff --git a/compiler/fir/tree/src/org/jetbrains/kotlin/fir/declarations/utils/declarationAttributes.kt b/compiler/fir/tree/src/org/jetbrains/kotlin/fir/declarations/utils/declarationAttributes.kt
index 82e572fd9a0..ccd8fca2df1 100644
--- a/compiler/fir/tree/src/org/jetbrains/kotlin/fir/declarations/utils/declarationAttributes.kt
+++ b/compiler/fir/tree/src/org/jetbrains/kotlin/fir/declarations/utils/declarationAttributes.kt
@@ -49,12 +49,6 @@ var <T> T.danglingTypeConstraints: List<DanglingTypeConstraint>?
 
 // ----------------------------------- Utils -----------------------------------
 
-val FirMemberDeclaration.containerSource: SourceElement?
-    get() = when (this) {
-        is FirCallableDeclaration -> containerSource
-        is FirClassLikeDeclaration -> sourceElement
-    }
-
 val FirProperty.hasExplicitBackingField: Boolean
     get() = backingField != null && backingField !is FirDefaultPropertyBackingField
 
diff --git a/kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/descriptors/utils.kt b/kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/descriptors/utils.kt
index ba3def3a272..c5570a68489 100644
--- a/kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/descriptors/utils.kt
+++ b/kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/descriptors/utils.kt
@@ -7,8 +7,10 @@ package org.jetbrains.kotlin.backend.konan.descriptors
 
 import org.jetbrains.kotlin.descriptors.*
 import org.jetbrains.kotlin.descriptors.impl.ModuleDescriptorImpl
+import org.jetbrains.kotlin.fir.declarations.FirCallableDeclaration
+import org.jetbrains.kotlin.fir.declarations.FirClassLikeDeclaration
 import org.jetbrains.kotlin.fir.declarations.FirMemberDeclaration
-import org.jetbrains.kotlin.fir.declarations.utils.containerSource
+import org.jetbrains.kotlin.fir.declarations.utils.sourceElement
 import org.jetbrains.kotlin.fir.lazy.AbstractFir2IrLazyDeclaration
 import org.jetbrains.kotlin.ir.declarations.IrDeclaration
 import org.jetbrains.kotlin.ir.declarations.IrSimpleFunction
@@ -62,8 +64,11 @@ private fun DeclarationDescriptor.isFromFirDeserializedInteropLibrary(): Boolean
     //  - K2 metadata deserializer doesn't set containerSource for property accessors.
     val topLevelDeclaration = declaration.findTopLevelDeclaration().propertyIfAccessor()
 
-    val firDeclaration = (topLevelDeclaration as? AbstractFir2IrLazyDeclaration<*>)?.fir ?: return false
-    val containerSource = (firDeclaration as? FirMemberDeclaration)?.containerSource
+    val firDeclaration = (topLevelDeclaration as? AbstractFir2IrLazyDeclaration<*>)?.fir as? FirMemberDeclaration ?: return false
+    val containerSource = when (firDeclaration) {
+        is FirCallableDeclaration -> firDeclaration.containerSource
+        is FirClassLikeDeclaration -> firDeclaration.sourceElement
+    }
 
     return containerSource is KlibDeserializedContainerSource && containerSource.isFromNativeInteropLibrary
 }