diff --git a/.github/workflows/cmake.yml b/.github/workflows/cmake.yml
index d328b00..20c15d8 100644
--- a/.github/workflows/cmake.yml
+++ b/.github/workflows/cmake.yml
@@ -2,7 +2,7 @@ name: ctest
 
 on: 
   push:
-  pull request: # build on PRs -- asks maintainers for approval before running on external PRs
+  pull_request: # build on PRs -- asks maintainers for approval before running on external PRs
     branches:
       - master
   workflow_dispatch: # add manual trigger for the workflow