diff --git a/.github/workflows/scan.yml b/.github/workflows/scan.yml
index fbcff6b1c0..1fa5c9587c 100644
--- a/.github/workflows/scan.yml
+++ b/.github/workflows/scan.yml
@@ -85,7 +85,6 @@ jobs:
           /d:sonar.test.inclusions=test/,bitwarden_license/test/ \
           /d:sonar.exclusions=test/,bitwarden_license/test/ \
           /o:"${{ github.repository_owner }}" /d:sonar.token="${{ secrets.SONAR_TOKEN }}" \
-          /d:sonar.pullrequest.key=${{ github.event.pull_request.number }} \
-          /d:sonar.host.url="https://sonarcloud.io"
+          /d:sonar.host.url="https://sonarcloud.io" ${{ contains(github.event_name, 'pull_request') && format('/d:sonar.pullrequest.key={0}', github.event.pull_request.number) || '' }}
           dotnet build
           dotnet-sonarscanner end /d:sonar.token="${{ secrets.SONAR_TOKEN }}"