--- libev/ev.c	2008/04/09 22:07:50	1.224
+++ libev/ev.c	2008/04/16 01:37:14	1.225
@@ -1187,7 +1187,7 @@
           && getenv ("LIBEV_FLAGS"))
         flags = atoi (getenv ("LIBEV_FLAGS"));
 
-      if (!(flags & 0x0000ffffUL))
+      if (!(flags & 0x0000ffffU))
         flags |= ev_recommended_backends ();
 
 #if EV_USE_PORT