diff --git a/Changes b/Changes
index b7a73fc..dda2450 100644
--- a/Changes
+++ b/Changes
@@ -1,5 +1,7 @@
 Revision history for libev, a high-performance and full-featured event loop.
 
+	- removed redundant 0-ptr check in ev_once.
+
 4.25 Fri Dec 21 07:49:20 CET 2018
         - INCOMPATIBLE CHANGE: EV_THROW was renamed to EV_NOEXCEPT
           (EV_THROW still provided) and now uses noexcept on C++11 or newer.
diff --git a/ev.c b/ev.c
index 47ef28a..7fe1241 100644
--- a/ev.c
+++ b/ev.c
@@ -5005,12 +5005,6 @@ ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, vo
 {
   struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
 
-  if (expect_false (!once))
-    {
-      cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
-      return;
-    }
-
   once->cb  = cb;
   once->arg = arg;