diff --git a/lib/libc/locale/nl_langinfo.c b/lib/libc/locale/nl_langinfo.c
index eeba8c31e771..4136faa06d78 100644
--- a/lib/libc/locale/nl_langinfo.c
+++ b/lib/libc/locale/nl_langinfo.c
@@ -72,8 +72,6 @@ nl_langinfo_l(nl_item item, locale_t loc)
 			ret = "SJIS";
 		else if (strcmp(s, "NONE") == 0)
 			ret = "POSIX";
-		else if (strcmp(s, "NONE:US-ASCII") == 0)
-			ret = "US-ASCII";
 		else if (strncmp(s, "NONE:", 5) == 0)
 			ret = (char *)(s + 5);
 		else