diff --git a/action.yml b/action.yml
index 7b68ab9..44af939 100644
--- a/action.yml
+++ b/action.yml
@@ -20,7 +20,7 @@ inputs:
   spec:
     description: 'Specify a file path for .spec file'
     required: False
-    default: *.spec
+    default: ""
 outputs:
   output:
     description: 'The output of PyInstaller'