diff --git a/.github/workflows/python_tests.yml b/.github/workflows/python_tests.yml
index e104c46..d7d04ff 100644
--- a/.github/workflows/python_tests.yml
+++ b/.github/workflows/python_tests.yml
@@ -28,7 +28,7 @@ jobs:
         python-version: ${{ matrix.python-version }}
 
     - name: Install libomp (macOS)
-      if: matrix.os == 'macos-latest'
+      if: ${{ matrix.platform == 'macos-latest' }}
       run: brew install libomp
 
     - name: Install dependencies