diff --git a/hw/xwin/winmsg.c b/hw/xwin/winmsg.c
index 8f7feb8fb..e9d72b7f6 100644
--- a/hw/xwin/winmsg.c
+++ b/hw/xwin/winmsg.c
@@ -92,3 +92,12 @@ winErrorFVerb (int verb, const char *format, ...)
   LogVMessageVerb(X_NONE, verb, format, ap);
   va_end (ap);
 }
+
+void
+winDebug (const char *format, ...)
+{
+  va_list ap;
+  va_start (ap, format);
+  LogVMessageVerb(X_NONE, 3, format, ap);
+  va_end (ap);
+}
diff --git a/hw/xwin/winmsg.h b/hw/xwin/winmsg.h
index 73d331c90..7ceb73858 100644
--- a/hw/xwin/winmsg.h
+++ b/hw/xwin/winmsg.h
@@ -41,6 +41,7 @@ void winDrvMsgVerb (int scrnIndex,
 void winDrvMsg (int scrnIndex, MessageType type, const char *format, ...);
 void winMsgVerb (MessageType type, int verb, const char *format, ...);
 void winMsg (MessageType type, const char *format, ...);
+void winDebug (const char *format, ...);
 
 void winErrorFVerb (int verb, const char *format, ...);