diff --git a/rfbplayer/rfbplayer.cxx b/rfbplayer/rfbplayer.cxx
index 2a9827e..d8f6ce9 100644
--- a/rfbplayer/rfbplayer.cxx
+++ b/rfbplayer/rfbplayer.cxx
@@ -355,6 +355,10 @@
       is->resumePlayback();
       PostQuitMessage(0);
       break;
+    case ID_HELP_COMMANDLINESEITCHES:
+      MessageBox(getMainHandle(), 
+      usage_msg, "RfbPlayer", MB_OK | MB_ICONINFORMATION);
+      break;
     }
     break;