diff --git a/browser/main/lib/ConfigManager.js b/browser/main/lib/ConfigManager.js
index b8acb324..8069ce0a 100644
--- a/browser/main/lib/ConfigManager.js
+++ b/browser/main/lib/ConfigManager.js
@@ -71,17 +71,17 @@ function get () {
     config = Object.assign({}, DEFAULT_CONFIG, JSON.parse(config))
 
     if (boostnotercConfig !== undefined) {
+      config = Object.assign({}, DEFAULT_CONFIG, boostnotercConfig)
       config.hotkey = Object.assign({}, DEFAULT_CONFIG.hotkey, boostnotercConfig.hotkey)
       config.ui = Object.assign({}, DEFAULT_CONFIG.ui, boostnotercConfig.ui)
       config.editor = Object.assign({}, DEFAULT_CONFIG.editor, boostnotercConfig.editor)
       config.preview = Object.assign({}, DEFAULT_CONFIG.preview, boostnotercConfig.preview)
     }
 
-    config = Object.assign(config, DEFAULT_CONFIG, config)
-    config.hotkey = Object.assign(config, DEFAULT_CONFIG.hotkey, config.hotkey)
-    config.ui = Object.assign(config, DEFAULT_CONFIG.ui, config.ui)
-    config.editor = Object.assign(config, DEFAULT_CONFIG.editor, config.editor)
-    config.preview = Object.assign(config, DEFAULT_CONFIG.preview, config.preview)
+    config.hotkey = Object.assign({}, DEFAULT_CONFIG.hotkey, config.hotkey)
+    config.ui = Object.assign({}, DEFAULT_CONFIG.ui, config.ui)
+    config.editor = Object.assign({}, DEFAULT_CONFIG.editor, config.editor)
+    config.preview = Object.assign({}, DEFAULT_CONFIG.preview, config.preview)
 
     if (!validate(config)) throw new Error('INVALID CONFIG')
   } catch (err) {