diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 973081f6..782202d9 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -67,7 +67,7 @@ jobs:
         run: |
           make test
       - name: Typechecking
-        if: ${{ startsWith(runner.os, 'macOS') & runner.python-version == '3.10'}}
+        if: ${{ startsWith(runner.os, 'macOS') && runner.python-version == '3.10'}}
         run: |
           make mypy
   report-coverage:  # Report coverage from python 3.10 and mac-os. May change later