diff --git a/.github/workflows/pr-code-format.yml b/.github/workflows/pr-code-format.yml
index 5223089ee8a93..c8fd541fd34db 100644
--- a/.github/workflows/pr-code-format.yml
+++ b/.github/workflows/pr-code-format.yml
@@ -1,5 +1,8 @@
 name: "Check code formatting"
 on: pull_request_target
+  branches:
+    - main
+
 permissions:
   pull-requests: write