diff --git a/src/box/txn.c b/src/box/txn.c
index 7a2a4877ee0ed6c36ffbf39ace8b9e405ec39363..60da5b5643e95a49840872784b154f9d2e6844de 100644
--- a/src/box/txn.c
+++ b/src/box/txn.c
@@ -462,10 +462,10 @@ txn_complete(struct txn *txn)
 	}
 }
 
-static void
-txn_entry_complete_cb(struct journal_entry *entry, void *data)
+void
+txn_complete_async(struct journal_entry *entry, void *complete_data)
 {
-	struct txn *txn = data;
+	struct txn *txn = complete_data;
 	txn->signature = entry->res;
 	/*
 	 * Some commit/rollback triggers require for in_txn fiber
@@ -487,7 +487,7 @@ txn_write_to_wal(struct txn *txn)
 	struct journal_entry *req = journal_entry_new(txn->n_new_rows +
 						      txn->n_applier_rows,
 						      &txn->region,
-						      txn_entry_complete_cb,
+						      txn_complete_async,
 						      txn);
 	if (req == NULL) {
 		txn_rollback(txn);
diff --git a/src/box/txn.h b/src/box/txn.h
index b950e2e188b2941e440872b9d3cfe72250480ad5..572c76d8402d28ece44d34624d87cc4c289deb82 100644
--- a/src/box/txn.h
+++ b/src/box/txn.h
@@ -44,6 +44,7 @@ extern "C" {
 /** box statistics */
 extern struct rmean *rmean_box;
 
+struct journal_entry;
 struct engine;
 struct space;
 struct tuple;
@@ -287,6 +288,12 @@ txn_commit(struct txn *txn);
 void
 txn_rollback(struct txn *txn);
 
+/**
+ * Complete asynchronous transaction.
+ */
+void
+txn_complete_async(struct journal_entry *entry, void *complete_data);
+
 /**
  * Submit a transaction to the journal.
  * @pre txn == in_txn()