diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 33223bbb..e6dfa010 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -5,7 +5,8 @@ on:
     branches:
     tags:
   pull_request:
-    - master
+    branches:
+      - master
 
 jobs:
   lint_check: