diff --git a/.github/workflows/AssignReviewers.yml b/.github/workflows/AssignReviewers.yml
index c6ad483..47f562d 100644
--- a/.github/workflows/AssignReviewers.yml
+++ b/.github/workflows/AssignReviewers.yml
@@ -7,7 +7,7 @@
 
 name: Assign reviewers from .github/REVIEWERS using CODEOWNERS syntax
 
-on: [pull_request, pull_request_target]
+on: pull_request_target
   types: [opened, synchronize, reopened, ready_for_review]
   branches:
     - master