diff --git a/alliance/src/xsch/src/XMX_event.c b/alliance/src/xsch/src/XMX_event.c
index 30c75ef8..b9cf5755 100644
--- a/alliance/src/xsch/src/XMX_event.c
+++ b/alliance/src/xsch/src/XMX_event.c
@@ -98,7 +98,9 @@
      <EnterWindow>: CallbackEvent(  3 )\n\
      <LeaveWindow>: CallbackEvent(  4 )\n\
      <Key>osfUp:    CallbackEvent(  5 )\n\
+     <Btn4Down>:    CallbackEvent(  5 )\n\
      <Key>osfDown:  CallbackEvent(  6 )\n\
+     <Btn5Down>:    CallbackEvent(  6 )\n\
      <Key>osfLeft:  CallbackEvent(  7 )\n\
      <Key>osfRight: CallbackEvent(  8 )\n\
      <Key>Z:        CallbackEvent(  9 )\n\