diff --git a/.github/workflows/cmake.yml b/.github/workflows/cmake.yml
index 119567b1..59a87110 100644
--- a/.github/workflows/cmake.yml
+++ b/.github/workflows/cmake.yml
@@ -3,7 +3,7 @@ name: CI build
 on:
   push:
     branches:
-      -main
+      - main
   pull_request:
     branches:
       - main