diff --git a/helper/ndn-global-routing-helper.h b/helper/ndn-global-routing-helper.h
index f233e89..53c7b15 100644
--- a/helper/ndn-global-routing-helper.h
+++ b/helper/ndn-global-routing-helper.h
@@ -32,7 +32,7 @@
 namespace ndn {
 
 /**
- * @ingroup ndn
+ * @ingroup ndn-helpers
  * @brief Helper for GlobalRouter interface
  */
 class GlobalRoutingHelper