diff --git a/.github/workflows/format.yml b/.github/workflows/format.yml
index 419bcd83..1c51de34 100644
--- a/.github/workflows/format.yml
+++ b/.github/workflows/format.yml
@@ -32,7 +32,12 @@ jobs:
         run: |
           find . -name \*\.ml -maxdepth 1 | xargs opam exec -- ocamlformat --inplace
 
+      - name: Check for modified files
+        id: git-check
+        run: echo "modified=$(if git diff-index --quiet HEAD --; then echo "false"; else echo "true"; fi)" >> $GITHUB_OUTPUT
+
       - name: Commit and push changes
+        if: steps.git-check.outputs.modified == 'true'
         run: |
           git config --global user.name "Auto-OCamlformat"
           git config --global user.email "auto@ocaml.format"