diff --git a/action.yml b/action.yml
index 7ecccc29..4ff6924a 100644
--- a/action.yml
+++ b/action.yml
@@ -17,6 +17,7 @@ inputs:
     description: 'ROS 2 Distribution to install the lint tool from'
     required: false
   package-name:
+    default: '*'
     description: |
         Name of the package(s) under test, as expected by colcon.
         Passing multiple package names is allowed.