diff --git a/.github/workflows/upload_schema.yml b/.github/workflows/upload_schema.yml
index ce8647ed4b..968a2c679d 100644
--- a/.github/workflows/upload_schema.yml
+++ b/.github/workflows/upload_schema.yml
@@ -28,7 +28,7 @@ jobs:
       - name: Generate API Schema
         run: |
           docker run -u $(id -u) --rm -v ${{ github.workspace }}:/awx_devel/:Z \
-            --workdir=/awx_devel ghcr.io/${{ github.repository_owner }}/awx_devel:${{ github.base_ref }} /start_tests.sh genschema
+            --workdir=/awx_devel ghcr.io/${{ github.repository_owner }}/awx_devel:${GITHUB_REF##*/} /start_tests.sh genschema
 
       - name: Upload API Schema
         env: