diff --git a/ResponseCode.h b/ResponseCode.h
index cdb4a79..2430f99 100644
--- a/ResponseCode.h
+++ b/ResponseCode.h
@@ -69,8 +69,7 @@
     static const int DiskCreated = 640;
     static const int DiskSizeChanged = 641;
     static const int DiskLabelChanged = 642;
-    static const int DiskVolumeCreated = 643;
-    static const int DiskVolumeDestroyed = 644;
+    static const int DiskUnsupported = 643;
     static const int DiskDestroyed = 649;
 
     static const int VolumeCreated = 650;