Index: uspace/srv/fs/exfat/exfat_ops.c
===================================================================
--- uspace/srv/fs/exfat/exfat_ops.c	(revision 4ba35353e28cd4c95e937d6b1b56d5b5261555b9)
+++ uspace/srv/fs/exfat/exfat_ops.c	(revision d9aeab31399f37485a1039202728b23f84e758aa)
@@ -389,5 +389,5 @@
 }
 
-static int exfat_node_expand(devmap_handle_t devmap_handle, exfat_node_t *nodep, exfat_cluster_t clusters)
+int exfat_node_expand(devmap_handle_t devmap_handle, exfat_node_t *nodep, exfat_cluster_t clusters)
 {
 	exfat_bs_t *bs;
@@ -415,4 +415,9 @@
 	if (rc != EOK)
 		return rc;
+	rc = exfat_zero_cluster(bs, devmap_handle, mcl);
+	if (rc != EOK) {
+		(void) exfat_free_clusters(bs, devmap_handle, mcl);
+		return rc;
+	}
 	/*
 	 * Append the cluster chain starting in mcl to the end of the