diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 08caa00..7805632 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -7,7 +7,7 @@ on:
 jobs:
   build:
     runs-on: ubuntu-latest
-    if: github.ref_type == "branch"
+    if: github.ref_type == 'branch'
     steps:
       - uses: actions/checkout@v2