diff --git a/.github/workflows/build_on_linux.yml b/.github/workflows/build_on_linux.yml
index 6b1cb194e..3f5adbf34 100644
--- a/.github/workflows/build_on_linux.yml
+++ b/.github/workflows/build_on_linux.yml
@@ -5,7 +5,7 @@ on:
   push:
     branches:
       - master
-    pull_request:
+  pull_request:
 
 jobs:
   build: