--- libev/ev.c	2010/10/24 19:38:20	1.363
+++ libev/ev.c	2010/10/24 21:51:03	1.364
@@ -1738,9 +1738,11 @@
 {
   int i;
 
+#if EV_MULTIPLICITY
   /* mimic free (0) */
   if (!EV_A)
     return;
+#endif
 
 #if EV_CLEANUP_ENABLE
   /* queue cleanup watchers (and execute them) */