--- cvsroot/EV/EV.xs	2007/11/23 12:22:26	1.75
+++ cvsroot/EV/EV.xs	2007/11/23 13:08:56	1.76
@@ -536,9 +536,14 @@
 	OUTPUT:
         RETVAL
 
-void once (SV *fh, int events, NV timeout, SV *cb)
+void once (SV *fh, int events, SV *timeout, SV *cb)
 	CODE:
-        ev_once (sv_fileno (fh), events, timeout, e_once_cb, newSVsv (cb));
+        ev_once (
+           sv_fileno (fh), events,
+           SvOK (timeout) ? SvNV (timeout) : -1.,
+           e_once_cb,
+           newSVsv (cb)
+        );
 
 PROTOTYPES: DISABLE