diff --git a/runtime/src/main/cpp/ObjCExport.h b/runtime/src/main/cpp/ObjCExport.h
index 28c52d73238..d3281e66230 100644
--- a/runtime/src/main/cpp/ObjCExport.h
+++ b/runtime/src/main/cpp/ObjCExport.h
@@ -34,11 +34,6 @@ inline static OBJ_GETTER(AllocInstanceWithAssociatedObject, const TypeInfo* type
 extern "C" id Kotlin_ObjCExport_refToObjC(ObjHeader* obj);
 extern "C" OBJ_GETTER(Kotlin_ObjCExport_refFromObjC, id obj);
 
-@protocol ConvertibleToKotlin
-@required
--(KRef)toKotlin:(KRef*)OBJ_RESULT;
-@end;
-
 extern "C" id Kotlin_Interop_CreateNSStringFromKString(KRef str);
 extern "C" OBJ_GETTER(Kotlin_Interop_CreateKStringFromNSString, NSString* str);
 
diff --git a/runtime/src/main/cpp/ObjCExportPrivate.h b/runtime/src/main/cpp/ObjCExportPrivate.h
index 37f9f1509bb..57aa89c6521 100644
--- a/runtime/src/main/cpp/ObjCExportPrivate.h
+++ b/runtime/src/main/cpp/ObjCExportPrivate.h
@@ -14,7 +14,7 @@
 #import "Memory.h"
 #import "ObjCExport.h"
 
-@interface KotlinBase : NSObject <ConvertibleToKotlin, NSCopying>
+@interface KotlinBase : NSObject <NSCopying>
 +(instancetype)createWrapper:(ObjHeader*)obj;
 @end;
 
diff --git a/runtime/src/objc/cpp/ObjCExportClasses.mm b/runtime/src/objc/cpp/ObjCExportClasses.mm
index b754d51ec69..76dd5f7402b 100644
--- a/runtime/src/objc/cpp/ObjCExportClasses.mm
+++ b/runtime/src/objc/cpp/ObjCExportClasses.mm
@@ -130,7 +130,7 @@ extern "C" id objc_autoreleaseReturnValue(id self);
 
 @end;
 
-@interface NSObject (NSObjectToKotlin) <ConvertibleToKotlin>
+@interface NSObject (NSObjectToKotlin)
 @end;
 
 static void checkLoadedOnce();
@@ -152,7 +152,7 @@ static void checkLoadedOnce();
 }
 @end;
 
-@interface NSString (NSStringToKotlin) <ConvertibleToKotlin>
+@interface NSString (NSStringToKotlin)
 @end;
 
 @implementation NSString (NSStringToKotlin)
@@ -176,7 +176,7 @@ OBJ_GETTER(Kotlin_boxDouble, KDouble value);
 
 }
 
-@interface NSNumber (NSNumberToKotlin) <ConvertibleToKotlin>
+@interface NSNumber (NSNumberToKotlin)
 @end;
 
 @implementation NSNumber (NSNumberToKotlin)
@@ -202,7 +202,7 @@ OBJ_GETTER(Kotlin_boxDouble, KDouble value);
 }
 @end;
 
-@interface NSDecimalNumber (NSDecimalNumberToKotlin) <ConvertibleToKotlin>
+@interface NSDecimalNumber (NSDecimalNumberToKotlin)
 @end;
 
 @implementation NSDecimalNumber (NSDecimalNumberToKotlin)
diff --git a/runtime/src/objc/cpp/ObjCExportCollections.mm b/runtime/src/objc/cpp/ObjCExportCollections.mm
index 272ef65a243..7ac5afc0b4d 100644
--- a/runtime/src/objc/cpp/ObjCExportCollections.mm
+++ b/runtime/src/objc/cpp/ObjCExportCollections.mm
@@ -81,7 +81,7 @@ static inline KInt objCIndexToKotlinOrThrow(NSUInteger index) {
   return index;
 }
 
-@interface NSArray (NSArrayToKotlin) <ConvertibleToKotlin>
+@interface NSArray (NSArrayToKotlin)
 @end;
 
 @implementation NSArray (NSArrayToKotlin)
@@ -94,7 +94,7 @@ static inline KInt objCIndexToKotlinOrThrow(NSUInteger index) {
 }
 @end;
 
-@interface NSMutableArray (NSMutableArrayToKotlin) <ConvertibleToKotlin>
+@interface NSMutableArray (NSMutableArrayToKotlin)
 @end;
 
 @implementation NSMutableArray (NSArrayToKotlin)
@@ -108,7 +108,7 @@ static inline KInt objCIndexToKotlinOrThrow(NSUInteger index) {
 @end;
 
 
-@interface NSSet (NSSetToKotlin) <ConvertibleToKotlin>
+@interface NSSet (NSSetToKotlin)
 @end;
 
 @implementation NSSet (NSSetToKotlin)
@@ -122,7 +122,7 @@ static inline KInt objCIndexToKotlinOrThrow(NSUInteger index) {
 
 @end;
 
-@interface NSDictionary (NSDictionaryToKotlin) <ConvertibleToKotlin>
+@interface NSDictionary (NSDictionaryToKotlin)
 @end;
 
 @implementation NSDictionary (NSDictionaryToKotlin)
@@ -165,7 +165,7 @@ static inline KInt objCIndexToKotlinOrThrow(NSUInteger index) {
 }
 @end;
 
-@interface KListAsNSArray : NSArray <ConvertibleToKotlin>
+@interface KListAsNSArray : NSArray
 @end;
 
 @implementation KListAsNSArray {
@@ -199,7 +199,7 @@ static inline KInt objCIndexToKotlinOrThrow(NSUInteger index) {
 
 @end;
 
-@interface KMutableListAsNSMutableArray : NSMutableArray <ConvertibleToKotlin>
+@interface KMutableListAsNSMutableArray : NSMutableArray
 @end;
 
 @implementation KMutableListAsNSMutableArray {
@@ -258,7 +258,7 @@ static inline KInt objCIndexToKotlinOrThrow(NSUInteger index) {
 
 @end;
 
-@interface KSetAsNSSet : NSSet <ConvertibleToKotlin>
+@interface KSetAsNSSet : NSSet
 @end;
 
 static inline id KSet_getElement(KRef set, id object) {
@@ -314,7 +314,7 @@ static inline id KSet_getElement(KRef set, id object) {
 }
 @end;
 
-@interface KotlinMutableSet : NSMutableSet <ConvertibleToKotlin>
+@interface KotlinMutableSet : NSMutableSet
 @end;
 
 @implementation KotlinMutableSet {
@@ -408,7 +408,7 @@ static inline id KSet_getElement(KRef set, id object) {
 }
 @end;
 
-@interface KMapAsNSDictionary : NSDictionary <ConvertibleToKotlin>
+@interface KMapAsNSDictionary : NSDictionary
 @end;
 
 static inline id KMap_get(KRef map, id aKey) {
@@ -462,7 +462,7 @@ static inline id KMap_get(KRef map, id aKey) {
 
 @end;
 
-@interface KotlinMutableDictionary : NSMutableDictionary <ConvertibleToKotlin>
+@interface KotlinMutableDictionary : NSMutableDictionary
 @end;
 
 @implementation KotlinMutableDictionary {