diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog
index 609495c42..43c510186 100644
--- a/winsup/cygwin/ChangeLog
+++ b/winsup/cygwin/ChangeLog
@@ -1,3 +1,8 @@
+2014-10-20  Corinna Vinschen  <corinna@vinschen.de>
+
+	* fhandler_serial.cc: Revert debug code accidentally checked in on
+	2014-08-18.
+
 2014-10-20  Corinna Vinschen  <corinna@vinschen.de>
 
 	* path.cc (symlink_info::check): Set error from status code if opening
diff --git a/winsup/cygwin/fhandler_serial.cc b/winsup/cygwin/fhandler_serial.cc
index 4e5d488b4..b6641e5e4 100644
--- a/winsup/cygwin/fhandler_serial.cc
+++ b/winsup/cygwin/fhandler_serial.cc
@@ -53,7 +53,7 @@ fhandler_serial::raw_read (void *ptr, size_t& ulen)
 		ulen, vmin_, vtime_, io_status.hEvent);
   if (!overlapped_armed)
     {
-      SetCommMask (get_handle (), EV_RXCHAR| EV_ERR | EV_BREAK | EV_CTS | EV_DSR | EV_RING | EV_RLSD | EV_RXFLAG);
+      SetCommMask (get_handle (), EV_RXCHAR);
       ResetEvent (io_status.hEvent);
     }