diff --git a/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/objcexport/ObjCExportHeaderGenerator.kt b/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/objcexport/ObjCExportHeaderGenerator.kt
index baeeddb3f7b..23528a961fe 100644
--- a/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/objcexport/ObjCExportHeaderGenerator.kt
+++ b/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/objcexport/ObjCExportHeaderGenerator.kt
@@ -41,7 +41,11 @@ internal class ObjCExportHeaderGenerator(val context: Context) {
         override fun getCategoryMembersFor(descriptor: ClassDescriptor) =
                 extensions[descriptor].orEmpty()
 
-        override val specialMappedTypes get() = customTypeMappers.keys
+        override fun isSpecialMapped(descriptor: ClassDescriptor): Boolean {
+            // TODO: this method duplicates some of the [mapReferenceType] logic.
+            return descriptor == context.builtIns.any ||
+                    descriptor.getAllSuperClassifiers().any { it in customTypeMappers }
+        }
     }
 
     val namer = ObjCExportNamer(context, mapper)
diff --git a/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/objcexport/ObjCExportMapper.kt b/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/objcexport/ObjCExportMapper.kt
index f59e209ba72..b44b3a94753 100644
--- a/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/objcexport/ObjCExportMapper.kt
+++ b/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/objcexport/ObjCExportMapper.kt
@@ -34,15 +34,12 @@ import org.jetbrains.kotlin.types.typeUtil.isUnit
 internal interface ObjCExportMapper {
     fun getCategoryMembersFor(descriptor: ClassDescriptor): List<CallableMemberDescriptor>
     val maxFunctionTypeParameterCount get() = 22
-    val specialMappedTypes: Set<ClassDescriptor>
+    fun isSpecialMapped(descriptor: ClassDescriptor): Boolean
 }
 
 private fun ObjCExportMapper.isRepresentedAsObjCInterface(descriptor: ClassDescriptor): Boolean =
         !descriptor.isInterface && !isSpecialMapped(descriptor)
 
-private fun ObjCExportMapper.isSpecialMapped(descriptor: ClassDescriptor): Boolean =
-        descriptor.getAllSuperClassifiers().any { it in specialMappedTypes }
-
 internal fun ObjCExportMapper.getClassIfCategory(descriptor: CallableMemberDescriptor): ClassDescriptor? {
     if (descriptor.dispatchReceiverParameter != null) return null