Computer "alters" move in analysis

A game I played a few weeks ago started:

1.         e4       Nc6

2.         d4        e5

3.         Nf3     d6

4.         Bb5     Ne7

However, the subsequent computer analysis showed Black’s fourth move as Nge7, which, of course, is differently specified, although the same chess move.  Ne7 is the more concise record.  I have not noticed any such occurrence before, and whilst it is not of concern, and therefore not a complaint, the observation may be of interest to some chess players.