diff --git a/.github/workflows/core_build.yml b/.github/workflows/core_build.yml
index 691f7f6d..81e4ae89 100644
--- a/.github/workflows/core_build.yml
+++ b/.github/workflows/core_build.yml
@@ -2,7 +2,7 @@ name: core-build
 on:
   push:
       branches: [ master ]
-    pull_request:
+  pull_request:
       branches: [ master ]
 
 jobs: