| Index: lib/prefs.js | 
| =================================================================== | 
| --- a/lib/prefs.js | 
| +++ b/lib/prefs.js | 
| @@ -254,7 +254,10 @@ | 
| else | 
| { | 
| overrides[pref] = value; | 
| - ext.storage.set(prefToKey(pref), value); | 
| + | 
| + let items = {}; | 
| + items[prefToKey(pref)] = value; | 
| + ext.storage.set(items); | 
| } | 
| }, | 
| enumerable: true |