diff --git a/src/box/memtx_tx.c b/src/box/memtx_tx.c
index 8382b9eb0ddd..f3b043b81396 100644
--- a/src/box/memtx_tx.c
+++ b/src/box/memtx_tx.c
@@ -2023,7 +2023,7 @@ memtx_tx_history_add_stmt(struct txn_stmt *stmt, struct tuple *old_tuple,
 			  struct tuple **result)
 {
 	assert(stmt != NULL);
-	assert(stmt->space != NULL);
+	assert(stmt->space != NULL && !stmt->space->def->opts.is_ephemeral);
 	assert(new_tuple != NULL || old_tuple != NULL);
 	assert(new_tuple == NULL || !new_tuple->is_dirty);
 
@@ -2666,11 +2666,7 @@ static void
 memtx_tx_track_read_story(struct txn *txn, struct space *space,
 			  struct memtx_story *story, uint64_t index_mask)
 {
-	if (txn == NULL)
-		return;
-	if (space == NULL)
-		return;
-	if (space->def->opts.is_ephemeral)
+	if (txn == NULL || space == NULL || space->def->opts.is_ephemeral)
 		return;
 	(void)space;
 	assert(story != NULL);
@@ -2715,11 +2711,7 @@ memtx_tx_track_read(struct txn *txn, struct space *space, struct tuple *tuple)
 {
 	if (tuple == NULL)
 		return;
-	if (txn == NULL)
-		return;
-	if (space == NULL)
-		return;
-	if (space->def->opts.is_ephemeral)
+	if (txn == NULL || space == NULL || space->def->opts.is_ephemeral)
 		return;
 
 	if (tuple->is_dirty) {
diff --git a/src/box/memtx_tx.h b/src/box/memtx_tx.h
index cfbad3240980..5ab55817d5f3 100644
--- a/src/box/memtx_tx.h
+++ b/src/box/memtx_tx.h
@@ -283,10 +283,7 @@ memtx_tx_track_point(struct txn *txn, struct space *space,
 {
 	if (!memtx_tx_manager_use_mvcc_engine)
 		return;
-	if (txn == NULL)
-		return;
-	/* Skip ephemeral spaces. */
-	if (space == NULL || space->def->id == 0)
+	if (txn == NULL || space == NULL || space->def->opts.is_ephemeral)
 		return;
 	memtx_tx_track_point_slow(txn, index, key);
 }
@@ -316,10 +313,7 @@ memtx_tx_track_gap(struct txn *txn, struct space *space, struct index *index,
 {
 	if (!memtx_tx_manager_use_mvcc_engine)
 		return;
-	if (txn == NULL)
-		return;
-	/* Skip ephemeral spaces. */
-	if (space == NULL || space->def->id == 0)
+	if (txn == NULL || space == NULL || space->def->opts.is_ephemeral)
 		return;
 	memtx_tx_track_gap_slow(txn, space, index, successor,
 				type, key, part_count);
@@ -347,10 +341,7 @@ memtx_tx_track_full_scan(struct txn *txn, struct space *space,
 {
 	if (!memtx_tx_manager_use_mvcc_engine)
 		return;
-	if (txn == NULL)
-		return;
-	/* Skip ephemeral spaces. */
-	if (space == NULL || space->def->id == 0)
+	if (txn == NULL || space == NULL || space->def->opts.is_ephemeral)
 		return;
 	memtx_tx_track_full_scan_slow(txn, index);
 }