change corrupt type
diff --git a/include/venti.h b/include/venti.h
index fb8f6c4..e0ae8c6 100644
--- a/include/venti.h
+++ b/include/venti.h
@@ -80,8 +80,8 @@
 	VtDirType	= 1<<3,
 	/* VtDirType+1, ... */
 	VtRootType	= 2<<3,
-	VtCorruptType,
 	VtMaxType,
+	VtCorruptType = 0xFF,
 
 	VtTypeDepthMask = 7,
 	VtTypeBaseMask = ~VtTypeDepthMask,