diff --git a/.github/workflows/pull_request.yaml b/.github/workflows/pull_request.yaml
index 78eb181..b92e0c1 100644
--- a/.github/workflows/pull_request.yaml
+++ b/.github/workflows/pull_request.yaml
@@ -1,7 +1,7 @@
 name: 'Pull Request Build'
 
 concurrency:
-  group: ${{ github.event_name }}/${{ github.event.branch }}/${{ github.event.number }}/${{ github.event.head_ref }}
+  group: ${{ github.event_name }}/${{ github.event.branch }}/${{ github.event.number }}/${{ github.head_ref }}
 
 on:
   merge_group: