diff --git a/src/AmpPostgresConnectionAdapter.php b/src/AmpPostgresConnectionAdapter.php
index 3f45fe2..4f0bb6c 100644
--- a/src/AmpPostgresConnectionAdapter.php
+++ b/src/AmpPostgresConnectionAdapter.php
@@ -50,8 +50,7 @@ public function getUnderlyingConnection() : PostgresLink {
     }
 
     protected function executeInsertSql(string $sql, array $parameters) : void {
-        $statement = $this->connection->prepare($sql);
-        $statement->execute($parameters);
+        $this->connection->execute($sql, $parameters);
     }
 
     protected function executeSelectAllSql(string $table) : array {