diff --git a/action.yml b/action.yml
index 96ab98f4..23ba293d 100644
--- a/action.yml
+++ b/action.yml
@@ -54,7 +54,7 @@ runs:
           --directory-exclude ${{ inputs.directory-exclude }} \
           --license ${{ inputs.license }} \
           --token ${{ github.token }} \
-          --commit-message ${{ github.event.head_commit.message }}
+          --commit-message "${{ github.event.head_commit.message }}"
         cat setup.cfg
         git add setup.cfg
         git commit -m "<bot> update setup.cfg" || true