diff --git a/src/libraries/navdrawer/navdrawer.js b/src/libraries/navdrawer/navdrawer.js
index 85162af88d..d86a748d56 100644
--- a/src/libraries/navdrawer/navdrawer.js
+++ b/src/libraries/navdrawer/navdrawer.js
@@ -334,7 +334,8 @@ class NavigationDrawer {
     }
 
     initialize() {
-        const options = Object.assign(this.defaults, this.options || {});
+        const options = Object.assign({}, this.defaults, this.options || {});
+        this.options = options;
 
         if (browser.edge) {
             options.disableEdgeSwipe = true;