diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index ae2abcc..180b63a 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -26,7 +26,7 @@ jobs:
           git config --local user.email "action@github.com"
           git config --local user.name "github-actions"
           git add --all
-          if [[ -z "$(git status --porcelain)"]]; then
+          if [ -z "$(git status --porcelain)" ]; then
              echo "::set-output name=push::false"
           else
              git commit -m "Updated PDF" -a