diff --git a/.github/workflows/sunnypilot-build-prebuilt.yaml b/.github/workflows/sunnypilot-build-prebuilt.yaml
index 81b89ce88b..caeb75e51d 100644
--- a/.github/workflows/sunnypilot-build-prebuilt.yaml
+++ b/.github/workflows/sunnypilot-build-prebuilt.yaml
@@ -8,7 +8,7 @@ env:
   PUBLIC_REPO_URL: "https://github.com/sunnypilot/sunnypilot"
   
   # Branch configurations
-  STAGING_C3_SOURCE_BRANCH: ${{ vars.STAGING_C3_SOURCE_BRANCH || 'master-tici' }} # vars are set on repo settings.
+  STAGING_C3_SOURCE_BRANCH: 'master-tici' # vars.STAGING_C3_SOURCE_BRANCH could be used, set on repo settings.
   
   # Runtime configuration
   SOURCE_BRANCH: "${{ github.head_ref || github.ref_name }}"