diff --git a/.github/workflows/mantle-releases-main.yml b/.github/workflows/mantle-releases-main.yml
index a6bcdbf655..185998c6e5 100644
--- a/.github/workflows/mantle-releases-main.yml
+++ b/.github/workflows/mantle-releases-main.yml
@@ -54,7 +54,7 @@ jobs:
         id: fetch-latest-mantle
         run: |
           commit=$(git ls-remote  https://github.com/flatcar/mantle refs/heads/flatcar-master | cut -f1)
-          echo "COMMIT=${COMMIT}" >>"${GITHUB_OUTPUT}"
+          echo "COMMIT=${commit}" >>"${GITHUB_OUTPUT}"
       - name: Try to apply patch
         if: ${{ steps.figure-out-branch.outputs.SKIP == 0 }}
         run: |