Ok, I set my mapfile like this: EXTENT 10.6661 59.9155 10.6824 59.9214 PROJECTION "+proj=eqc +lat_ts=60 +lon_0=0 +x_0=0 +y_0=0 +datum=WGS84" END and this is what I have had before: EXTENT 10.6661 59.9155 10.6824 59.9214 PROJECTION "init=EPSG:4326" END