diff --git a/kotlin-native/platformLibs/src/platform/ios/CloudKit.def b/kotlin-native/platformLibs/src/platform/ios/CloudKit.def
index 195e20e03b4..5928dcb6404 100644
--- a/kotlin-native/platformLibs/src/platform/ios/CloudKit.def
+++ b/kotlin-native/platformLibs/src/platform/ios/CloudKit.def
@@ -5,3 +5,5 @@ modules = CloudKit
 
 compilerOpts = -framework CloudKit
 linkerOpts = -framework CloudKit
+
+objcClassesIncludingCategories = CKNotification
diff --git a/kotlin-native/platformLibs/src/platform/osx/CloudKit.def b/kotlin-native/platformLibs/src/platform/osx/CloudKit.def
index 6e0ebe474b2..ca165945126 100644
--- a/kotlin-native/platformLibs/src/platform/osx/CloudKit.def
+++ b/kotlin-native/platformLibs/src/platform/osx/CloudKit.def
@@ -5,3 +5,5 @@ modules = CloudKit
 
 compilerOpts = -framework CloudKit
 linkerOpts = -framework CloudKit
+
+objcClassesIncludingCategories = CKNotification
diff --git a/kotlin-native/platformLibs/src/platform/tvos/CloudKit.def b/kotlin-native/platformLibs/src/platform/tvos/CloudKit.def
index 195e20e03b4..5928dcb6404 100644
--- a/kotlin-native/platformLibs/src/platform/tvos/CloudKit.def
+++ b/kotlin-native/platformLibs/src/platform/tvos/CloudKit.def
@@ -5,3 +5,5 @@ modules = CloudKit
 
 compilerOpts = -framework CloudKit
 linkerOpts = -framework CloudKit
+
+objcClassesIncludingCategories = CKNotification
diff --git a/kotlin-native/platformLibs/src/platform/watchos/CloudKit.def b/kotlin-native/platformLibs/src/platform/watchos/CloudKit.def
index fca240000f0..35c8d088afc 100644
--- a/kotlin-native/platformLibs/src/platform/watchos/CloudKit.def
+++ b/kotlin-native/platformLibs/src/platform/watchos/CloudKit.def
@@ -5,3 +5,5 @@ modules = CloudKit
 
 compilerOpts = -framework CloudKit
 linkerOpts = -framework CloudKit
+
+objcClassesIncludingCategories = CKNotification