diff --git a/.gitea/workflows/auto_join.yaml b/.gitea/workflows/auto_join.yaml
index 63e040a..111c163 100644
--- a/.gitea/workflows/auto_join.yaml
+++ b/.gitea/workflows/auto_join.yaml
@@ -21,7 +21,7 @@ jobs:
       - name: Check if issue title starts with [join]
         id: check-title
         run: |
-          if [[ "${{ github.event.issue.title }}" == [join]* ]]; then
+          if [[ "${{ github.event.issue.title }}" == "[join]"* ]]; then
             echo "::set-output name=valid_title::true"
           else
             echo "::set-output name=valid_title::false"