diff --git a/.github/workflows/aws_tfhe_fast_tests.yml b/.github/workflows/aws_tfhe_fast_tests.yml
index 049a5a5f71..c1b332564b 100644
--- a/.github/workflows/aws_tfhe_fast_tests.yml
+++ b/.github/workflows/aws_tfhe_fast_tests.yml
@@ -159,7 +159,7 @@ jobs:
       (github.event_name == 'pull_request' && needs.setup-instance.result != 'skipped')
     needs: [ should-run, setup-instance ]
     concurrency:
-      group: ${{ github.workflow }}_${{ github.ref }}
+      group: ${{ github.workflow }}_${{ github.head_ref || github.ref }}
       cancel-in-progress: true
     runs-on: ${{ needs.setup-instance.outputs.runner-name }}
     steps: