diff --git a/vncviewer/OptionsDialog.cxx b/vncviewer/OptionsDialog.cxx
index 7a2cf2e..31064ba 100644
--- a/vncviewer/OptionsDialog.cxx
+++ b/vncviewer/OptionsDialog.cxx
@@ -259,6 +259,7 @@
   acceptClipboardCheckbox->value(acceptClipboard);
   sendClipboardCheckbox->value(sendClipboard);
   sendPrimaryCheckbox->value(sendPrimary);
+  systemKeysCheckbox->value(fullscreenSystemKeys);
 
   menuKeyChoice->value(0);
 
@@ -352,6 +353,7 @@
   acceptClipboard.setParam(acceptClipboardCheckbox->value());
   sendClipboard.setParam(sendClipboardCheckbox->value());
   sendPrimary.setParam(sendPrimaryCheckbox->value());
+  fullscreenSystemKeys.setParam(systemKeysCheckbox->value());
 
   if (menuKeyChoice->value() == 0)
     menuKey.setParam("");
@@ -683,6 +685,12 @@
                                                      _("Send primary selection and cut buffer as clipboard")));
   ty += CHECK_HEIGHT + TIGHT_MARGIN;
 
+  systemKeysCheckbox = new Fl_Check_Button(LBLRIGHT(tx, ty,
+                                                    CHECK_MIN_WIDTH,
+                                                    CHECK_HEIGHT,
+                                                    _("Pass system keys directly to server (full screen)")));
+  ty += CHECK_HEIGHT + TIGHT_MARGIN;
+
   menuKeyChoice = new Fl_Choice(LBLLEFT(tx, ty, 150, CHOICE_HEIGHT, _("Menu key")));
 
   menuKeyChoice->add(_("None"), 0, NULL, (void*)0, FL_MENU_DIVIDER);