NSMutableArray is empty after addObject

I want to add an object into an NSMutableArray:

NSLog(@"Object text: %@", object.text);
NSLog(@"Object: %@", object);
[appdelegate.objects addObject:object];
NSLog(@"Objects array size: %i", [appdelegate.objects count]);

This is the output:

Object text: This is the text
Object: <Object: 0x6e762c0>
Objects array size: 0

How is this possible, I add an object, on the next line, it is still empty. The NSMutableArray is not nil, because that would raise an exception.

Anybody a guess?