1 files changed, 1 insertions, 1 deletions
diff --git a/ev.c b/ev.c
index ae020d2..6ac8367 100644
--- a/ev.c
+++ b/ev.c
@@ -2510,7 +2510,7 @@ ev_io_start (EV_P_ ev_io *w)
     return;
 
   assert (("libev: ev_io_start called with negative fd", fd >= 0));
-  assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
+  assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
 
   EV_FREQUENT_CHECK;