diff --git a/avocado/core/settings.py b/avocado/core/settings.py
index 7be0fe7ad0..b497bf0fe0 100644
--- a/avocado/core/settings.py
+++ b/avocado/core/settings.py
@@ -521,7 +521,6 @@ def add_argparser_to_option(
                 "argument or be a positional argument"
             )
 
-        option = None
         try:
             option = self._namespaces[namespace]
         except KeyError: