diff --git a/src/mod_mam.erl b/src/mod_mam.erl
index 7912be30d..791bcd16f 100644
--- a/src/mod_mam.erl
+++ b/src/mod_mam.erl
@@ -259,6 +259,8 @@ remove_room(LServer, Name, Host) ->
     Mod:remove_room(LServer, LName, LHost),
     ok.
 
+-spec remove_mam_for_user(binary(), binary()) ->
+    {ok, binary()} | {error, binary()}.
 remove_mam_for_user(User, Server) ->
     LUser = jid:nodeprep(User),
     LServer = jid:nameprep(Server),
@@ -272,6 +274,8 @@ remove_mam_for_user(User, Server) ->
 	    {error, <<"Db returned error">>}
     end.
 
+-spec remove_mam_for_user_with_peer(binary(), binary(), binary()) ->
+    {ok, binary()} | {error, binary()}.
 remove_mam_for_user_with_peer(User, Server, Peer) ->
     LUser = jid:nodeprep(User),
     LServer = jid:nameprep(Server),
diff --git a/src/mod_mam_mnesia.erl b/src/mod_mam_mnesia.erl
index 53d390cb7..55154f6bb 100644
--- a/src/mod_mam_mnesia.erl
+++ b/src/mod_mam_mnesia.erl
@@ -77,8 +77,7 @@ remove_from_archive(LUser, LServer, WithJid) ->
     US = {LUser, LServer},
     Peer = jid:remove_resource(jid:split(WithJid)),
     F = fun () ->
-	    Msgs = mnesia:match_object(archive_msg,
-				       #archive_msg{us = US, bare_peer = Peer, _ = '_'}),
+	    Msgs = mnesia:match_object(#archive_msg{us = US, bare_peer = Peer, _ = '_'}),
 	    lists:foreach(fun mnesia:delete_object/1, Msgs)
 	end,
     case mnesia:transaction(F) of