diff --git a/.github/workflows/dev.yml b/.github/workflows/dev.yml
index 109433b4d..6fa96a6c0 100644
--- a/.github/workflows/dev.yml
+++ b/.github/workflows/dev.yml
@@ -30,7 +30,7 @@ jobs:
 
       - name: Fetch merged PRs
         run: |
-          echo 'MERGED_PRS<<END' >> $GITHUB_ENV
+          echo 'MERGED_PRS<<EOF' >> $GITHUB_ENV
           git log --pretty=format:"%s by %an" -n ${{ needs.check.outputs.new-commits-number }} --no-merges >> $GITHUB_ENV
           echo EOF >> $GITHUB_ENV
         shell: bash