diff --git a/.github/workflows/mirror.yml b/.github/workflows/mirror.yml
index 8589ecc..a596892 100644
--- a/.github/workflows/mirror.yml
+++ b/.github/workflows/mirror.yml
@@ -2,6 +2,7 @@ on:
   workflow_dispatch:
     inputs:
       repo:
+        required: true
         type: string
         default: multipleof4/sune
 permissions: