diff --git a/atef/widgets/config.py b/atef/widgets/config.py
index 1b94ff6c..0ef457c5 100644
--- a/atef/widgets/config.py
+++ b/atef/widgets/config.py
@@ -185,7 +185,7 @@ def save_as(self, *args, filename: Optional[str] = None, **kwargs):
                 caption='Save as',
                 filter='Json Files (*.json)',
             )
-        if filename.endswith('.json') is False:   # json_extension_bug_fix location
+        if not filename.endswith('.json'):
             filename += '.json'
         try:
             with open(filename, 'w') as fd: