diff --git a/core/object/class_db.h b/core/object/class_db.h
index aceea5b651a..d9eec4e4a88 100644
--- a/core/object/class_db.h
+++ b/core/object/class_db.h
@@ -164,6 +164,7 @@ public:
 		t->creation_func = &creator<T>;
 		t->exposed = true;
 		t->class_ptr = T::get_class_ptr_static();
+		t->api = current_api;
 		T::register_custom_data_to_otdb();
 	}
 
@@ -175,6 +176,7 @@ public:
 		ERR_FAIL_COND(!t);
 		t->exposed = true;
 		t->class_ptr = T::get_class_ptr_static();
+		t->api = current_api;
 		//nothing
 	}
 
@@ -195,6 +197,7 @@ public:
 		t->creation_func = &_create_ptr_func<T>;
 		t->exposed = true;
 		t->class_ptr = T::get_class_ptr_static();
+		t->api = current_api;
 		T::register_custom_data_to_otdb();
 	}