diff --git a/vncviewer/DesktopWindow.cxx b/vncviewer/DesktopWindow.cxx
index 8f387dc..a93aa50 100644
--- a/vncviewer/DesktopWindow.cxx
+++ b/vncviewer/DesktopWindow.cxx
@@ -824,8 +824,8 @@ void DesktopWindow::ungrabKeyboard()
 
   serial = XNextRequest(fl_display);
 
-  XUngrabPointer(fl_display, fl_event_time);
-  XUngrabKeyboard(fl_display, fl_event_time);
+  XUngrabPointer(fl_display, CurrentTime);
+  XUngrabKeyboard(fl_display, CurrentTime);
 
   // See grabKeyboard()
   XSync(fl_display, False);