diff --git a/client/ayon_core/addon/base.py b/client/ayon_core/addon/base.py
index 878c50e039..8c5158a712 100644
--- a/client/ayon_core/addon/base.py
+++ b/client/ayon_core/addon/base.py
@@ -442,7 +442,7 @@ def _load_addons_in_core(
                 ))
                 continue
 
-        elif ext not in (".py", ):
+        elif ext != ".py":
             continue
 
         # TODO add more logic how to define if folder is addon or not