diff --git a/.github/workflows/linux_cmake.yml b/.github/workflows/linux_cmake.yml
index cbf155c..db35480 100644
--- a/.github/workflows/linux_cmake.yml
+++ b/.github/workflows/linux_cmake.yml
@@ -8,7 +8,7 @@ name: Linux Cmake
   push:
     branches:
     - master
-  pull_request: null
+  pull_request:
 env:
   EXTRA_RESOLVE_OPTIONS: ${{ github.event.inputs.extra_resolve_options }}
 jobs: