diff --git a/apps/roster/include/roster.hrl b/apps/roster/include/roster.hrl
index c9782a4ebb0a65678c93813b96d2c62329a9d0c8..d1416372be3b0bed02dd4807c5c9024e1f50d217 100644
--- a/apps/roster/include/roster.hrl
+++ b/apps/roster/include/roster.hrl
@@ -203,7 +203,7 @@
                          phone       = [] :: [] | binary() | {fake, binary()},
                          token       = [] :: [] | binary(),
                          type        = [] :: [] | update | clear | delete | deleted | logout
-                                                | verify | verified | expired | reg | resend 
+                                                | verify | verified | expired | reg | resend
                                                 | voice | push | get | {ver | reg, string()},
                          sms_code    = [] :: [] | binary(),
                          attempts    = [] :: [] | integer(),
@@ -227,7 +227,7 @@
                          avatar   = [] :: [] | binary(),
                          update   = 0  :: [] | integer(),
                          status   = [] :: [] | get | create | del | remove | nick
-                                             | search | contact | add | update 
+                                             | search | contact | add | update
                                              | list | patch | last_msg }).
 
 -record('Profile',      {phone    = [] :: [] | binary(),
@@ -270,8 +270,8 @@
                          status    = [] :: updated | get | update | last_loaded | last_msg | get_reply | double_get | delete |
                                            image | video | file | link | audio | contact | location | text}).
 
-
--record('Schedule',     {id   = [] :: [] | integer(),
+-type time_diff() :: {integer(), time()}.
+-record('Schedule',     {id   = [] :: [] | integer() | time_diff(),
                          proc = [] :: [] | integer() | binary(),
                          data = [] :: binary() | list(term()),
                          state =[] :: [] | term()}).