diff --git a/.github/workflows/build_and_test.yml b/.github/workflows/build_and_test.yml
index f48670af21..220ff90a39 100644
--- a/.github/workflows/build_and_test.yml
+++ b/.github/workflows/build_and_test.yml
@@ -870,7 +870,7 @@ jobs:
       - name: Build vm image
         run: |
           ./vm-builder \
-            -spec=vm-image-spec.yaml
+            -spec=vm-image-spec.yaml \
             -src=369495373322.dkr.ecr.eu-central-1.amazonaws.com/compute-node-${{ matrix.version }}:${{needs.tag.outputs.build-tag}} \
             -dst=369495373322.dkr.ecr.eu-central-1.amazonaws.com/vm-compute-node-${{ matrix.version }}:${{needs.tag.outputs.build-tag}}