diff --git a/src/ejabberd_config.erl b/src/ejabberd_config.erl
index 2e82e5a0b..d506c4c78 100644
--- a/src/ejabberd_config.erl
+++ b/src/ejabberd_config.erl
@@ -722,6 +722,9 @@ strings_to_binary(L) when is_list(L) ->
         false ->
             strings_to_binary1(L)
     end;
+strings_to_binary({A, B, C, D}) when
+	is_integer(A), is_integer(B), is_integer(C), is_integer(D) ->
+    {A, B, C ,D};
 strings_to_binary(T) when is_tuple(T) ->
     list_to_tuple(strings_to_binary1(tuple_to_list(T)));
 strings_to_binary(X) ->