diff --git a/apps/emqx/src/persistent_session/emqx_persistent_session.erl b/apps/emqx/src/persistent_session/emqx_persistent_session.erl
index 3e9e00c81..bfda233e1 100644
--- a/apps/emqx/src/persistent_session/emqx_persistent_session.erl
+++ b/apps/emqx/src/persistent_session/emqx_persistent_session.erl
@@ -229,7 +229,7 @@ discard_if_present(ClientID) ->
             ok
     end.
 
--spec discard(binary(), emgx_session:session()) -> emgx_session:session().
+-spec discard(binary(), emqx_session:session()) -> emqx_session:session().
 discard(ClientID, Session) ->
     discard_opt(is_store_enabled(), ClientID, Session).
 
diff --git a/apps/emqx_ft/src/emqx_ft_storage_exporter.erl b/apps/emqx_ft/src/emqx_ft_storage_exporter.erl
index 591173615..9e6f83b7f 100644
--- a/apps/emqx_ft/src/emqx_ft_storage_exporter.erl
+++ b/apps/emqx_ft/src/emqx_ft_storage_exporter.erl
@@ -38,7 +38,7 @@
 
 -export_type([export/0]).
 
--type storage() :: emxt_ft_storage_fs:storage().
+-type storage() :: emqx_ft_storage_fs:storage().
 -type transfer() :: emqx_ft:transfer().
 -type filemeta() :: emqx_ft:filemeta().
 -type checksum() :: emqx_ft:checksum().