diff --git a/sys/kern/vfs_export.c b/sys/kern/vfs_export.c
index 1b0494e3ddf7..a19c3d266991 100644
--- a/sys/kern/vfs_export.c
+++ b/sys/kern/vfs_export.c
@@ -358,23 +358,6 @@ vfs_getnewfsid(mp)
 	simple_unlock(&mntid_slock);
 }
 
-/*
- * Get what should become the root fsid.
- *
- * This is somewhat of a hack.  If the rootdev is not known we
- * assume that vfs_getnewfsid() will be called momentarily to
- * allocate it, and we return what vfs_getnewfsid() will return.
- */
-
-dev_t
-vfs_getrootfsid(struct mount *mp)
-{
-	int mtype;
-
-	mtype = mp->mnt_vfc->vfc_typenum;
-	return(makedev(255, mtype + (mntid_base << 16)));
-}
-
 /*
  * Knob to control the precision of file timestamps:
  *
diff --git a/sys/kern/vfs_subr.c b/sys/kern/vfs_subr.c
index 1b0494e3ddf7..a19c3d266991 100644
--- a/sys/kern/vfs_subr.c
+++ b/sys/kern/vfs_subr.c
@@ -358,23 +358,6 @@ vfs_getnewfsid(mp)
 	simple_unlock(&mntid_slock);
 }
 
-/*
- * Get what should become the root fsid.
- *
- * This is somewhat of a hack.  If the rootdev is not known we
- * assume that vfs_getnewfsid() will be called momentarily to
- * allocate it, and we return what vfs_getnewfsid() will return.
- */
-
-dev_t
-vfs_getrootfsid(struct mount *mp)
-{
-	int mtype;
-
-	mtype = mp->mnt_vfc->vfc_typenum;
-	return(makedev(255, mtype + (mntid_base << 16)));
-}
-
 /*
  * Knob to control the precision of file timestamps:
  *