kdb-bot/src/bot_graphql/mutations/short_role_name_mutation.py

@@ -42,7 +42,7 @@ class ShortRoleNameMutation(QueryABC):
         )
 
         result = self._short_role_names.find_short_role_names_by_role_id(short_role_name.role_id)
-        if result is not None:
+        if result.count() > 0:
             raise ValueError("Short name for role already exists")
 
         self._short_role_names.add_short_role_name(short_role_name)