--- a/lib/getlocalename_l-unsafe.c
+++ b/lib/getlocalename_l-unsafe.c
@@ -658,6 +658,9 @@ getlocalename_l_unsafe (int category, locale_t locale)
       };
       const char *name = ((struct __locale_t *) locale)->mb_cur_max == 4 ? "C.UTF-8" : "C";
       return (struct string_with_storage) { name, STORAGE_INDEFINITE };
+#elif defined __redox__ && HAVE_GETLOCALENAME_L
+      const char *name = getlocalename_l (category, locale);
+      return (struct string_with_storage) { name != NULL ? name : "", STORAGE_OBJECT };
 #else
  #error "Please port gnulib getlocalename_l-unsafe.c to your platform! Report this to bug-gnulib."
 #endif