diff --git a/hw/kdrive/src/kdrive.h b/hw/kdrive/src/kdrive.h
index f0fc909ea..ced48d7a8 100644
--- a/hw/kdrive/src/kdrive.h
+++ b/hw/kdrive/src/kdrive.h
@@ -872,6 +872,12 @@ KdEnableInput (void);
 void
 ProcessInputEvents (void);
 
+void
+KdRingBell (KdKeyboardInfo      *ki,
+            int                 volume,
+            int                 pitch,
+            int                 duration);
+
 extern KdPointerDriver	LinuxMouseDriver;
 extern KdPointerDriver	LinuxEvdevDriver;
 extern KdPointerDriver	Ps2MouseDriver;