diff --git a/src/app-utils/gnc-component-manager.c b/src/app-utils/gnc-component-manager.c
index a2e4b4f638..22cf61f610 100644
--- a/src/app-utils/gnc-component-manager.c
+++ b/src/app-utils/gnc-component-manager.c
@@ -261,7 +261,7 @@ gnc_cm_event_handler (QofInstance *entity,
   const GUID *guid = qof_entity_get_guid(entity);
 #if CM_DEBUG
   fprintf (stderr, "event_handler: event %d, entity %p, guid %s\n", event_type,
-	   entity, guid);
+	   entity, guid_to_string(guid));
 #endif
   add_event (&changes, guid, event_type, TRUE);