diff --git a/doc/user/ospf6d.rst b/doc/user/ospf6d.rst
index 71bc047720..6413c62995 100644
--- a/doc/user/ospf6d.rst
+++ b/doc/user/ospf6d.rst
@@ -15,8 +15,8 @@ OSPF6 router
 .. index:: router ospf6
 .. clicmd:: router ospf6
 
-.. index:: router-id A.B.C.D
-.. clicmd:: router-id A.B.C.D
+.. index:: ospf6 router-id A.B.C.D
+.. clicmd:: ospf6 router-id A.B.C.D
 
    Set router's Router-ID.