diff --git a/.gitea/workflows/pr-title-check.yaml b/.gitea/workflows/pr-title-check.yaml
index 3487895..42df333 100644
--- a/.gitea/workflows/pr-title-check.yaml
+++ b/.gitea/workflows/pr-title-check.yaml
@@ -11,7 +11,7 @@ jobs:
       - name: Check PR title
         run: |
           title=${{ gitea.event.pull_request.title }}
-          if [[ ! $title =~ ^(BLOG-[0-9]+|NO-ISSUE) [A-Z].+$ ]]; then
+          if [[ ! "$title" =~ "^(BLOG-[0-9]+|NO-ISSUE) [A-Z].+$" ]]; then
             echo 'The title is not meet the format `BLOG-XXX Title title title`'
             exit 1
           else