--- src/sys/conf/options	2007/09/02 13:27:23	1.72
+++ src/sys/conf/options	2007/11/01 22:05:23	1.73
@@ -158,6 +158,7 @@ FFS
 NFS
 NWFS
 USERFS
+HAMMER
 
 # If you are following the conditions in the copyright,
 # you can enable soft-updates which will speed up a lot of thigs