diff --git a/.github/workflows/flux-diff.yaml b/.github/workflows/flux-diff.yaml
index d220a6727..3f060fffb 100644
--- a/.github/workflows/flux-diff.yaml
+++ b/.github/workflows/flux-diff.yaml
@@ -58,7 +58,7 @@ jobs:
 
       - name: Generate Diff
         id: diff
-        run: echo "diff=$(cat diff.patch)" >> $GITHUB_OUTPUT
+        run: echo diff="$(cat diff.patch)" >> $GITHUB_OUTPUT
 
       - if: ${{ steps.diff.outputs.diff != '' }}
         name: Add Comment