diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2a7397b..bfbd734 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -74,6 +74,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Build frontend signed
+        if: (github.event_name != 'pull_request') || (github.event.pull_request.head.repo.full_name == github.repository)
         id: build-signed
         uses: ./.github/build/
         env:
@@ -83,6 +84,7 @@ jobs:
           signed: true
 
   validate-plugin:
+    if: (github.event_name != 'pull_request') || (github.event.pull_request.head.repo.full_name == github.repository)
     runs-on: ubuntu-latest
     needs: build
     steps: