diff --git a/Objects/unicodeobject.c b/Objects/unicodeobject.c
index c62f65b..742c770 100644
--- a/Objects/unicodeobject.c
+++ b/Objects/unicodeobject.c
@@ -5282,9 +5282,11 @@
     int i;
 
     /* Doublecheck the configuration... */
+#ifndef USE_UCS4_STORAGE
     if (sizeof(Py_UNICODE) != 2)
         Py_FatalError("Unicode configuration error: "
 		      "sizeof(Py_UNICODE) != 2 bytes");
+#endif
 
     /* Init the implementation */
     unicode_freelist = NULL;