diff --git a/sys/conf/options b/sys/conf/options
index d4cd9b81940e..8eb062faab76 100644
--- a/sys/conf/options
+++ b/sys/conf/options
@@ -58,7 +58,6 @@ MD5
 MFS_ROOT	opt_mfs.h
 MFS_ROOT_SIZE	opt_mfs.h
 NTIMECOUNTER	opt_ntp.h
-EXPORTMFS	opt_mfs.h
 NSWAPDEV	opt_swap.h
 PPS_SYNC	opt_ntp.h
 QUOTA