diff --git a/src/system/kernel/fs/fifo.cpp b/src/system/kernel/fs/fifo.cpp
index 7f2dafda71..cc855517f2 100644
--- a/src/system/kernel/fs/fifo.cpp
+++ b/src/system/kernel/fs/fifo.cpp
@@ -1067,6 +1067,7 @@ static fs_vnode_ops sFIFOVnodeOps = {
 	NULL,	// fs_access()
 	&fifo_read_stat,
 	&fifo_write_stat,
+	NULL,
 
 	/* file */
 	NULL,	// create()
diff --git a/src/system/kernel/fs/rootfs.cpp b/src/system/kernel/fs/rootfs.cpp
index be321b473b..6f80a511d9 100644
--- a/src/system/kernel/fs/rootfs.cpp
+++ b/src/system/kernel/fs/rootfs.cpp
@@ -1022,13 +1022,6 @@ rootfs_read_stat(fs_volume* _volume, fs_vnode* _v, struct stat* stat)
 }
 
 
-static status_t
-rootfs_preallocate(fs_volume*, fs_vnode*, off_t, off_t)
-{
-	return B_NOT_SUPPORTED;
-}
-
-
 static status_t
 rootfs_write_stat(fs_volume* _volume, fs_vnode* _vnode, const struct stat* stat,
 	uint32 statMask)
@@ -1181,7 +1174,7 @@ fs_vnode_ops sVnodeOps = {
 	NULL,	// fs_access()
 	&rootfs_read_stat,
 	&rootfs_write_stat,
-	&rootfs_preallocate,
+	NULL,
 
 	/* file */
 	&rootfs_create,