diff --git a/.github/workflows/integrate.yml b/.github/workflows/integrate.yml
index c0b73ecc..44fb1bd4 100644
--- a/.github/workflows/integrate.yml
+++ b/.github/workflows/integrate.yml
@@ -34,7 +34,7 @@ jobs:
       - name: Setup
         uses: shivammathur/setup-php@v2
         with:
-          php-version: ${{ matrix.PHP }}
+          php-version: $ {{ matrix.PHP }}
       - name: Install
         run: |
           sudo apt-get install -y re2c