diff --git a/.github/workflows/benchmark_pr.yml b/.github/workflows/benchmark_pr.yml
index 029c45a9..9784da07 100644
--- a/.github/workflows/benchmark_pr.yml
+++ b/.github/workflows/benchmark_pr.yml
@@ -8,6 +8,7 @@ permissions:
 
 jobs:
     generate_plots:
+        if: "! github.event.pull_request.head.repo.fork"
         runs-on: ubuntu-latest
 
         steps: