diff --git a/src/system/kernel/fs/rootfs.cpp b/src/system/kernel/fs/rootfs.cpp
index 046e4dbe14..be321b473b 100644
--- a/src/system/kernel/fs/rootfs.cpp
+++ b/src/system/kernel/fs/rootfs.cpp
@@ -1022,6 +1022,13 @@ 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)
@@ -1174,6 +1181,7 @@ fs_vnode_ops sVnodeOps = {
 	NULL,	// fs_access()
 	&rootfs_read_stat,
 	&rootfs_write_stat,
+	&rootfs_preallocate,
 
 	/* file */
 	&rootfs_create,