diff --git a/Engines/Wine/Plugins/override DLL/script.js b/Engines/Wine/Plugins/override DLL/script.js
index 7331d21972..6be4e51098 100644
--- a/Engines/Wine/Plugins/override DLL/script.js	
+++ b/Engines/Wine/Plugins/override DLL/script.js	
@@ -3,11 +3,11 @@ const Regedit = include("engines.wine.plugins.regedit");
 module.default = class OverrideDLL {
     constructor(wine) {
         this.wine = wine;
-        this.modes = {};
+        this.modes = new Map();
     }
 
     withMode(mode, libraries) {
-        this.modes[mode] = libraries;
+        this.modes.set(mode, libraries);
 
         return this;
     }
@@ -15,11 +15,9 @@ module.default = class OverrideDLL {
     go() {
         let regeditFileContent = `REGEDIT4\n\n[HKEY_CURRENT_USER\\Software\\Wine\\DllOverrides]\n`;
 
-        Object.entries(this.modes)
-            .map(([mode, libraries]) => libraries.map(library => [library, mode]))
-            .forEach(([library, mode]) => {
-                regeditFileContent += `"*${library}"="${mode}"\n`;
-            });
+        this.modes.forEach((libraries, mode) =>
+            libraries.forEach(library => regeditFileContent += `"*${library}"="${mode}"\n`)
+        );
 
         new Regedit(this.wine).patch(regeditFileContent);
     }