diff --git a/apps/emqttd/src/emqttd_sm_sup.erl b/apps/emqttd/src/emqttd_sm_sup.erl
index ece44dd38..fc50956d1 100644
--- a/apps/emqttd/src/emqttd_sm_sup.erl
+++ b/apps/emqttd/src/emqttd_sm_sup.erl
@@ -20,7 +20,7 @@
 %%% SOFTWARE.
 %%%-----------------------------------------------------------------------------
 %%% @doc
-%%% emqttd client manager supervisor.
+%%% emqttd session manager supervisor.
 %%%
 %%% @end
 %%%-----------------------------------------------------------------------------