diff --git a/.github/workflows/notify-on-an-bdu-label.yml b/.github/workflows/notify-on-an-bdu-label.yml
index acc0b94b0e..f969e4b162 100644
--- a/.github/workflows/notify-on-an-bdu-label.yml
+++ b/.github/workflows/notify-on-an-bdu-label.yml
@@ -16,7 +16,8 @@ jobs:
     if: >-
       github.event.action == 'labeled' &&
       github.event.label.name == 'A/N BDU' &&
-      github.event.pull_request.state == 'open'
+      github.event.pull_request.state == 'open' &&
+      github.event.pull_request.created_at != github.event.pull_request.updated_at
     steps:
       - name: Send Teams notification
         uses: Alfresco/alfresco-build-tools/.github/actions/send-teams-notification@1d671f8f10336861c89c67be57c6648d98876103 # v18.19.0