diff --git a/bench_test.go b/bench_test.go
index 73e1b258..dd391c71 100644
--- a/bench_test.go
+++ b/bench_test.go
@@ -484,7 +484,7 @@ func multiInsert(conn *pgx.Conn, tableName string, columnNames []string, rowSrc
 	}
 
 	if err := tx.Commit(context.Background()); err != nil {
-		return 0, nil
+		return 0, err
 	}
 
 	return rowCount, nil