diff --git a/tests/example-schema.yang b/tests/example-schema.yang
index 44baf80..6e040ae 100644
--- a/tests/example-schema.yang
+++ b/tests/example-schema.yang
@@ -206,6 +206,12 @@
         }
 
         action shutdown {
+            input {
+                leaf force {
+                    mandatory true;
+                    type boolean;
+                }
+            }
             output {
                 leaf success {
                     mandatory true;