diff --git a/action.yml b/action.yml
index 6890bd2..11d5dd7 100644
--- a/action.yml
+++ b/action.yml
@@ -3,8 +3,8 @@ description: '部屬 Docker 映像檔'
 author: 'Jeffery'
 inputs:
   SERVICE_NAME:
-      description: '服務名稱'
-      required: false
+    description: '服務名稱'
+    required: false
 runs:
   using: 'composite'
   steps: