Search results distance always says miles

(Apologies this is not in proper patch format, not sure how to do so yet)
Search results always displays distance is in miles not km. A search using miles gives:
Approximately 8.5 miles from bh25

while the same search in km gives:
Approximately 13.7 miles from bh25

Which is the correct distance if it said 13.7 km instead of 13.7 miles. Fixed by changing location.module lines 249 & 252 from:
$distance_unit = ($edit['distance_unit'] == 'km') ...

to:
$distance_unit = ($proximity_params['unit'] == 'km') ...