diff --git a/.github/workflows/sha.yml b/.github/workflows/sha.yml
index 38210aa..8aca1a5 100644
--- a/.github/workflows/sha.yml
+++ b/.github/workflows/sha.yml
@@ -13,7 +13,7 @@ jobs:
     # Set the type of machine to run on
     runs-on: ubuntu-latest
 
-    if: contains(github.ref, "master")
+    if: github.ref == 'refs/heads/master'
     steps:
       # Checks out a copy of your repository on the ubuntu-latest machine
       - name: Checkout code