Get Integer value from NSNumber in NSArray

I have an NSArray with NSNumber objects that have int values:

arrayOfValues = [[[NSArray alloc] initWithObjects: [NSNumber numberWithInt:1], [NSNumber numberWithInt:3], [NSNumber numberWithInt:5], [NSNumber numberWithInt:6], [NSNumber numberWithInt:7], nil] autorelease];
[arrayOfValues retain];

I'm trying to iterate through the array like this:

int currentValue;
for (int i = 0; i < [arrayOfValues count]; i++)
{
    currentValue = [(NSNumber *)[arrayOfValues objectAtIndex:i] intValue];
    NSLog(@"currentValue: %@", currentValue); // EXE_BAD_ACCESS
}

What am I doing wrong here?