diff --git a/src/ejabberd_http.erl b/src/ejabberd_http.erl
index 15ecf5554..300f4e07f 100644
--- a/src/ejabberd_http.erl
+++ b/src/ejabberd_http.erl
@@ -934,7 +934,7 @@ find_handler_port_path(Tls, Handler) ->
          (_) ->
               []
       end, ets:tab2list(ejabberd_listener)),
-    lists:flatten(Paths).
+    lists:append(Paths).
 
 find_handler_port_path_option(ThisTls, Port, Handler, Handlers) ->
     lists:filtermap(fun({Path, H}) when H == Handler ->
diff --git a/src/ejabberd_web_admin.erl b/src/ejabberd_web_admin.erl
index 927b1627e..f5b2a679a 100644
--- a/src/ejabberd_web_admin.erl
+++ b/src/ejabberd_web_admin.erl
@@ -2017,7 +2017,7 @@ nice_this(This) when is_atom(This) ->
 nice_this(This) when is_binary(This) ->
     nice_this(binary_to_list(This));
 nice_this(This) when is_list(This) ->
-    list_to_binary(lists:flatten([string:titlecase(Word)
+    list_to_binary(lists:append([string:titlecase(Word)
                                   || Word <- string:replace(This, "_", " ", all)])).
 
 -spec long_this(These :: [This :: atom()]) -> Long :: binary().