diff --git a/lib/athenaExpress.js b/lib/athenaExpress.js
index f5d39db..8f1e002 100644
--- a/lib/athenaExpress.js
+++ b/lib/athenaExpress.js
@@ -50,7 +50,7 @@ module.exports = class AthenaExpress {
    * @returns {Promise<Object>}
    */
   async query(query, queryParams) {
-    const config = this.config;
+    const config = { ...this.config };
 
     let initiateQueryInAthena = true;