diff --git a/lib/transaction.js b/lib/transaction.js
index 953dee3b..6b28b917 100644
--- a/lib/transaction.js
+++ b/lib/transaction.js
@@ -71,7 +71,7 @@ function mixinTransaction(PostgreSQL) {
       if (err) {
         pool.destroy(connection);
       } else {
-        pool.release(connection);
+        pool.pool.release(connection);
       }
     }
   };