diff --git a/.github/actions/slack-notify/action.yml b/.github/actions/slack-notify/action.yml
index 0a30e1d159b5f..221cac584b63e 100644
--- a/.github/actions/slack-notify/action.yml
+++ b/.github/actions/slack-notify/action.yml
@@ -103,5 +103,5 @@ runs:
           thread_ts: "${{ inputs.thread_ts }}"
           text: |
             ❌ Build pipeline failed
-            Is blocked by channel topic: ${{ inputs.blocked || "n/a" }}
+            ${{ inputs.blocked == 'true' && format('Is blocked by channel topic: {0}', inputs.blocked) }}
             • Check logs: <${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}|View details>
\ No newline at end of file