diff --git a/functions/update-omz b/functions/update-omz
index 36aa0290..2ff74c03 100644
--- a/functions/update-omz
+++ b/functions/update-omz
@@ -31,4 +31,5 @@ else
 fi
 
 unset _color
+unset _upstream
 cd "$current_path" || return 1