--- EV/EV.xs	2010/11/28 11:40:41	1.150
+++ EV/EV.xs	2010/12/30 07:28:47	1.151
@@ -210,6 +210,7 @@
     {
       sv_events = sv_events_cache; sv_events_cache = 0;
       SvIV_set (sv_events, revents);
+      SvIOK_only (sv_events);
     }
   else
     {