diff --git a/.woodpecker/check_fmt.yaml b/.woodpecker/check_fmt.yaml
index 35d12fa..fbee4b6 100644
--- a/.woodpecker/check_fmt.yaml
+++ b/.woodpecker/check_fmt.yaml
@@ -1,6 +1,5 @@
 when:
-  - event: push
-    branch: main
+  - event: pull_request
 
 steps:
   - name: "Run nix flake check"