diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 4dde9e7..1adcf15 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -33,7 +33,7 @@ jobs:
       matrix:
         os: [ ubuntu-latest, macos-latest, windows-latest ]
     runs-on: ${{ matrix.os }}
-    if: github.ref_name === "main"
+    if: ${{ github.ref_name }} == "main"
     steps:
       - name: zerotier
         uses: zerotier/github-action@main