diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog
index dcfee80e9..85a033c38 100644
--- a/winsup/cygwin/ChangeLog
+++ b/winsup/cygwin/ChangeLog
@@ -1,3 +1,7 @@
+Mon Jun 26 18:32:41 2000  Christopher Faylor <cgf@cygnus.com>
+
+	* windows.cc (setitimer): Round up when < 1000 usecs.
+
 Mon Jun 26 17:34:54 2000  Christopher Faylor <cgf@cygnus.com>
 
 	* hinfo.cc (hinfo::dup2): Eliminate compiler warning.
diff --git a/winsup/cygwin/window.cc b/winsup/cygwin/window.cc
index 6651ddc54..ad7ac4018 100644
--- a/winsup/cygwin/window.cc
+++ b/winsup/cygwin/window.cc
@@ -176,7 +176,10 @@ setitimer (int which, const struct itimerval *value, struct itimerval *oldvalue)
   itv = *value;
   elapse = itv.it_value.tv_sec * 1000 + itv.it_value.tv_usec / 1000;
   if (elapse == 0)
-    return 0;
+    if (itv.it_value.tv_usec)
+      elapse = 1;
+    else
+      return 0;
   if (!(timer_active = SetTimer (gethwnd(), 1, elapse, NULL)))
     {
       __seterrno ();