correct discussion of fromdisktype

man/man3/venti-fcall.3

diff --git a/man/man3/venti-fcall.3 b/man/man3/venti-fcall.3
index 2eb0cea..ed3916f 100644
--- a/man/man3/venti-fcall.3
+++ b/man/man3/venti-fcall.3
@@ -174,7 +174,7 @@
 .I vtfromdisktype
 converts a disk value to the enumeration value,
 always using the
-.B VtDataType
+.B VtDirType
 pointers.
 The
 .B VtFcall