diff --git a/.github/workflows/push-broker.yaml b/.github/workflows/push-broker.yaml
index cd06dd6f5..629b6fad6 100644
--- a/.github/workflows/push-broker.yaml
+++ b/.github/workflows/push-broker.yaml
@@ -19,8 +19,7 @@ jobs:
         username: '${{ secrets.DOCKERHUB_USERNAME }}'
     - uses: 'docker/build-push-action@v6'
       with:
-        build-args:
-        - FEATURES: 'ws'
+        build-args: 'FEATURES=ws'
         cache-from: 'type=gha'
         cache-to: 'type=gha,mode=max'
         context: 'src/rust'