diff --git a/.github/workflows/build-uc2.yml b/.github/workflows/build-uc2.yml
index 46a6de51..93b871a6 100644
--- a/.github/workflows/build-uc2.yml
+++ b/.github/workflows/build-uc2.yml
@@ -14,6 +14,7 @@ on:
       - "AUTHORS.TXT"
       - "CHANGELOG"
       - "COPYING"
+  pull_request:
 
 env:
   CI: true