--- libev/ev++.h	2009/07/10 00:36:21	1.45
+++ libev/ev++.h	2009/08/22 20:40:02	1.46
@@ -725,9 +725,11 @@
   EV_END_WATCHER (stat, stat)
   #endif
 
+#if EV_IDLE_ENABLE
   EV_BEGIN_WATCHER (idle, idle)
     void set () throw () { }
   EV_END_WATCHER (idle, idle)
+#endif
 
   EV_BEGIN_WATCHER (prepare, prepare)
     void set () throw () { }