diff --git a/vncviewer/Viewport.cxx b/vncviewer/Viewport.cxx
index 1dff102..beee8ba 100644
--- a/vncviewer/Viewport.cxx
+++ b/vncviewer/Viewport.cxx
@@ -78,6 +78,10 @@
   setServerPF(serverPF);
 
   contextMenu = new Fl_Menu_Button(0, 0, 0, 0);
+  // Setting box type to FL_NO_BOX prevents it from trying to draw the
+  // button component (which we don't want)
+  contextMenu->box(FL_NO_BOX);
+
   initContextMenu();
 
   setMenuKey();