Using segmentation referrers = direct shows the wrong result


I need to create a Segment by users which arrived via direct Access.
The Website has the following values.
Visits = 463
For referrers I have the following:
direct = 384
Search Engins = 47
Websites = 32

I created a Segment
referrers = direct

I expect that I’ll get 384 visits using this segement, but I am getting 232 visits. Is there any reason why I am getting not 384 like I expected?