diff --git a/src/ejabberd_loglevel.erl b/src/ejabberd_loglevel.erl
index b56f665e2..0e033324d 100644
--- a/src/ejabberd_loglevel.erl
+++ b/src/ejabberd_loglevel.erl
@@ -62,6 +62,10 @@
 	 #loglevel{ordinal = 5, name = debug, description = "Debug",
 		   function = debug_msg, event_type = info_msg, msg_prefix = "D"}]).
 
+%% @type level() = integer() | atom().
+
+%% @spec () -> [LevelOrdinal::integer(), [{Module::atom(), LevelOrdinal::integer()}]]
+%% @doc Get the default and all custom levels
 get() ->
     {DefaultLevel, _CustomLevels} = ejabberd_logger:get(),
     case lists:keysearch(DefaultLevel, #loglevel.ordinal, ?LOG_LEVELS) of
@@ -71,6 +75,9 @@ get() ->
 	    erlang:error({no_such_loglevel, DefaultLevel})
     end.
 
+%% @spec (DefaultLevel::level() | {DefaultLevel::level(), [{Module::atom(), Level::level()]}) ->
+%%       {module, ejabberd_logger}
+%% @doc Set the default and all custom levels
 set(DefaultLevel) when is_atom(DefaultLevel) orelse is_integer(DefaultLevel) ->
     set({DefaultLevel, []});
 set({DefaultLevel, CustomLevels}) when is_list(CustomLevels) ->
@@ -86,6 +93,8 @@ set({DefaultLevel, CustomLevels}) when is_list(CustomLevels) ->
 set(_) ->
     exit("Invalid loglevel format").
 
+%% @spec (Module::atom()::atom(), CustomLevel::level()) -> ok
+%% @doc Set a custom level
 set_custom(Module, Level) ->
     {DefaultLevel, CustomLevels} = ejabberd_logger:get(),
     case lists:keysearch(Module, 1, CustomLevels) of
@@ -97,10 +106,14 @@ set_custom(Module, Level) ->
 	    set({DefaultLevel, [{Module, Level} | CustomLevels]})
     end.
 
+%% @spec () -> ok
+%% @doc Clear all custom levels
 clear_custom() ->
     {DefaultLevel, _CustomLevels} = ejabberd_logger:get(),
     set({DefaultLevel, []}).
 
+%% @spec (Module::atom()) -> ok
+%% @doc Clear a custom level
 clear_custom(Module) ->
     {DefaultLevel, CustomLevels} = ejabberd_logger:get(),
     case lists:keysearch(Module, 1, CustomLevels) of