--- EV/EV.pm	2007/10/31 10:53:53	1.14
+++ EV/EV.pm	2007/10/31 18:28:00	1.15
@@ -83,6 +83,15 @@
    XSLoader::load "EV", $VERSION;
 }
 
+@EV::Io::ISA       = "EV::Watcher";
+@EV::Time::ISA     = "EV::Watcher";
+@EV::Timer::ISA    = "EV::Time";
+@EV::Periodic::ISA = "EV::Time";
+@EV::Signal::ISA   = "EV::Watcher";
+@EV::Idle::ISA     = "EV::Watcher";
+@EV::Prepare::ISA  = "EV::Watcher";
+@EV::Check::ISA    = "EV::Watcher";
+
 =head1 BASIC INTERFACE
 
 =over 4