Faction core - discrepancy between listed and actual area required to place core

If you attempt to place a core in a small space, it says "The core requires a 5x5x5 open area to be placed.", but this is incorrect. In practice, the area required is 5x4x5 (4 high). In terms of if it would be better to change it to require a 5 high area (as the message says) or leave as-is (change the message to say 5x4x5), I don't think there's a huge difference either way