diff --git a/python/helpers/generator3/core.py b/python/helpers/generator3/core.py
index ab0e11a6877f9..f828dc1d1017c 100644
--- a/python/helpers/generator3/core.py
+++ b/python/helpers/generator3/core.py
@@ -592,6 +592,11 @@ def find_module(self, fullname, path=None):
             imported_names.add(fullname)
             return None
 
+        # noinspection PyMethodMayBeStatic
+        def find_spec(self, fullname, path, target=None):
+            imported_names.add(fullname)
+            return None
+
     my_finder = MyFinder()
     sys.meta_path.insert(0, my_finder)
     try: