diff --git a/BeefLibs/corlib/src/GC.bf b/BeefLibs/corlib/src/GC.bf
index 8f97f4aa..77ea1d33 100644
--- a/BeefLibs/corlib/src/GC.bf
+++ b/BeefLibs/corlib/src/GC.bf
@@ -152,6 +152,7 @@ namespace System
 		static void MarkAppendedObject(Object obj)
 		{
 #if BF_ENABLE_REALTIME_LEAK_CHECK
+#if BF_ENABLE_OBJECT_DEBUG_FLAGS
 			ClassVData* maskedVData = (ClassVData*)(void*)(obj.[Friend]mClassVData & ~(int)0xFF);
 			if (maskedVData == null)
 				return;
@@ -160,6 +161,7 @@ namespace System
 				return;
 #endif
 			obj.[Friend]GCMarkMembers();
+#endif
 		}
 
 		static void MarkDerefedObject(Object* obj)