diff --git a/vncviewer/OptionsDialog.h b/vncviewer/OptionsDialog.h
index 6984c72..c177560 100644
--- a/vncviewer/OptionsDialog.h
+++ b/vncviewer/OptionsDialog.h
@@ -64,6 +64,8 @@
 
   static void handleDesktopSize(Fl_Widget *widget, void *data);
 
+  static void handleClipboard(Fl_Widget *widget, void *data);
+
   static void handleCancel(Fl_Widget *widget, void *data);
   static void handleOK(Fl_Widget *widget, void *data);