diff --git a/ext/mbstring/mbstring.c b/ext/mbstring/mbstring.c
index 58793978725..f630cb884a5 100644
--- a/ext/mbstring/mbstring.c
+++ b/ext/mbstring/mbstring.c
@@ -888,6 +888,8 @@ PHP_RINIT_FUNCTION(mbstring)
 	const struct mb_overload_def *p;
 
 	MBSTRG(current_language) = MBSTRG(language);
+	php_mb_nls_get_default_detect_order_list(MBSTRG(language), 
+        &MBSTRG(default_detect_order_list), &MBSTRG(default_detect_order_list_size));
 
 	if (MBSTRG(internal_encoding) == mbfl_no_encoding_invalid) {
 		char *default_enc = NULL;