diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 0b77ee3..44361e7 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -38,7 +38,7 @@ jobs:
                 path: poster.pdf
 
             - name: Commit poster PDF
-              if: github.event.pull_request.merged == true
+              if: ${{ github.event.pull_request.merged }}
               uses: EndBug/add-and-commit@v9
               with:
                 add: 'poster.pdf'
@@ -46,7 +46,7 @@ jobs:
                 message: 'Add poster.pdf at ${{ github.sha }}'
 
             - name: Deploy html to gh-pages
-              if: github.event.pull_request.merged == true
+              if: ${{ github.event.pull_request.merged }}
               uses: JamesIves/github-pages-deploy-action@4.1.5
               with:
                 branch: gh-pages