diff --git a/testing/btest/plugins/publish-event-hook.zeek b/testing/btest/plugins/publish-event-hook.zeek
index 704a1ccc59..118034a0f6 100644
--- a/testing/btest/plugins/publish-event-hook.zeek
+++ b/testing/btest/plugins/publish-event-hook.zeek
@@ -6,6 +6,7 @@
 
 redef allow_network_time_forward = F;
 
+redef Cluster::backend = Cluster::CLUSTER_BACKEND_BROKER;
 
 module App;