diff --git a/.github/workflows/docker-publish.yml b/.github/workflows/docker-publish.yml
index 3a520e4e..ddeb2dbf 100644
--- a/.github/workflows/docker-publish.yml
+++ b/.github/workflows/docker-publish.yml
@@ -61,8 +61,7 @@ jobs:
         uses: docker/build-push-action@v2
         with:
           context: .
-          build-args: |
-            - VER=${{ env.NBGV_SimpleVersion }}
+          build-args: VER=${{ env.NBGV_SimpleVersion }}
           push: ${{ github.event_name != 'pull_request' }}
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}