diff --git a/libisofs/ecma119.c b/libisofs/ecma119.c
index 2ad3a0d..5a2b2fc 100755
--- a/libisofs/ecma119.c
+++ b/libisofs/ecma119.c
@@ -612,7 +612,7 @@ ecma119_start_chunking(struct ecma119_write_target *t,
 	       off_t data_size,
 	       uint8_t *buf)
 {
-	if (data_size > t->state_data_size) {
+	if (data_size != t->state_data_size) {
 		data_size = round_up(data_size, t->block_size);
 		t->state_data = realloc(t->state_data, data_size);
 		t->state_data_size = data_size;
diff --git a/libisofs/joliet.c b/libisofs/joliet.c
index 3f71a2a..82ec0ff 100644
--- a/libisofs/joliet.c
+++ b/libisofs/joliet.c
@@ -212,7 +212,6 @@ write_one_dir_record(struct ecma119_write_target *t,
 	iso_bb(rec->vol_seq_number, t->volnum + 1, 2);
 	rec->len_fi[0] = len_fi;
 	memcpy(rec->file_id, name, len_fi);
-
 }
 
 static void
@@ -304,6 +303,8 @@ write_dirs(struct ecma119_write_target *t, uint8_t *buf)
 {
 	size_t i;
 	struct joliet_tree_node *dir;
+
+	assert (t->curblock == t->dirlist_joliet[0]->block);
 	for (i = 0; i < t->dirlist_len; i++) {
 		dir = t->dirlist_joliet[i];
 		write_one_dir(t, dir, buf);