diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog
index 0c5892e76..485e04eb3 100644
--- a/winsup/cygwin/ChangeLog
+++ b/winsup/cygwin/ChangeLog
@@ -1,3 +1,8 @@
+Tue Feb 29 00:46:09 2000  Christopher Faylor <cgf@cygnus.com>
+
+	* sigproc.cc (sig_send): Temporarily set priority to highest while
+	sending a signal.
+
 Mon Feb 28 11:23:29 2000  Christopher Faylor <cgf@cygnus.com>
 
 	* pinfo.cc (set_myself): Add build date to strace output.
diff --git a/winsup/cygwin/sigproc.cc b/winsup/cygwin/sigproc.cc
index 59d18a54b..0c26f2f93 100644
--- a/winsup/cygwin/sigproc.cc
+++ b/winsup/cygwin/sigproc.cc
@@ -776,7 +776,10 @@ sig_send (pinfo *p, int sig)
 
   /* Notify the process that a signal has arrived.
    */
+  int prio;
   SetLastError (0);
+  prio = GetThreadPriority (GetCurrentThread ());
+  (void) SetThreadPriority (GetCurrentThread (), THREAD_PRIORITY_TIME_CRITICAL);
   if (!ReleaseSemaphore (thiscatch, 1, NULL) && (int) GetLastError () > 0)
     {
       /* Couldn't signal the semaphore.  This probably means that the
@@ -826,6 +829,8 @@ sig_send (pinfo *p, int sig)
 	rc = WAIT_OBJECT_0;
     }
 
+  SetThreadPriority (GetCurrentThread (), prio);
+
   if (rc == WAIT_OBJECT_0)
     rc = 0;		// Successful exit
   else