diff --git a/vncviewer/DesktopWindow.cxx b/vncviewer/DesktopWindow.cxx
index 1f3332b..1bc413d 100644
--- a/vncviewer/DesktopWindow.cxx
+++ b/vncviewer/DesktopWindow.cxx
@@ -829,7 +829,7 @@
   if (Fl::grab())
     return;
 
-  XUngrabKeyboard(fl_display, fl_event_time);
+  XUngrabKeyboard(fl_display, CurrentTime);
 #endif
 }