```
NSDictionary *dictionnary = [[NSDictionary alloc] initWithObjectsAndKeys:@"content", @"myKey", nil];
[[NSUserDefaults standardUserDefaults] registerDefaults:dictionnary];
[[NSUserDefaults standardUserDefaults] removeObjectForKey:@"myKey"];
[[NSUserDefaults standardUserDefaults] synchronize];
NSLog(@"%@",[[NSUserDefaults standardUserDefaults] objectForKey:@"myKey"]);

```

Log :

```
2012-12-17 17:09:05.062 browserHD[4075:c07] content 

```

Why the result value "content"? I want the result value "nil".