diff --git a/client/ayon_core/pipeline/workfile/utils.py b/client/ayon_core/pipeline/workfile/utils.py
index 354449bd3e..6666853998 100644
--- a/client/ayon_core/pipeline/workfile/utils.py
+++ b/client/ayon_core/pipeline/workfile/utils.py
@@ -545,7 +545,7 @@ def save_next_version(
         elif last_workfile is not None:
             ext = os.path.splitext(last_workfile.filepath)[1]
         else:
-            ext = next(iter(workfile_extensions), None)
+            ext = next(iter(workfile_extensions))
         ext = ext.lstrip(".")
 
     if ext: