--- a/util-src/encodings.c	Fri Feb 05 15:05:39 2010 +0000
+++ b/util-src/encodings.c	Wed Feb 10 00:12:48 2010 +0500
@@ -174,7 +174,7 @@
 	size_t len;
 	const char *s = luaL_checklstring(L, 1, &len);
 	char* output = NULL;
-	int ret = idna_to_ascii_8z(s, &output, 0);
+	int ret = idna_to_ascii_8z(s, &output, IDNA_USE_STD3_ASCII_RULES);
 	if (ret == IDNA_SUCCESS) {
 		lua_pushstring(L, output);
 		idn_free(output);