diff --git a/.github/workflows/strain_dispatcher.yml b/.github/workflows/strain_dispatcher.yml
index d94ec291..3f983c6c 100644
--- a/.github/workflows/strain_dispatcher.yml
+++ b/.github/workflows/strain_dispatcher.yml
@@ -23,7 +23,7 @@ jobs:
               "ref": "${{ github.ref }}",
               "sha": "${{ github.sha }}",
               "ref_name": "${{ github.ref_name }}",
-              "head_ref" "${{ github.head_ref }}",
+              "head_ref": "${{ github.head_ref }}",
               "base_ref": "${{ github.base_ref }}",
               "strain_property": "DISTRO_EOX_NELP_DPKG.version",
               "build_environment": "${{ env.BUILD_ENVIRONMENT }}"