[SOLVED] Error on loading map

I'm using your very nice module "OT Brand Maps" on a client's website and the map displays first the map of Hanoï (which is probably a very nice place) while loading.
Few seconds later, the right map is displayed (France map).

Which file must be edited to fix this, please?
Thanks in advance for your reply.

1- create an override of the module in backend
2- open the file /html/mod_otbrandmaps/default.ph
3- edit the line 166 with the desired coordinates
4- save and enjoy