Fix write on a read-only property
Fix write on a read-only property

shelsonjava/darkroomjs,MattKetmo/darkroomjs,Drooids/darkroomjs,mstevens/darkroomjs,shelsonjava/darkroomjs,MattKetmo/darkroomjs,Drooids/darkroomjs,mstevens/darkroomjs,marcelgruber/darkroomjs,mstevens/darkroomjs,marcelgruber/darkroomjs,Drooids/darkroomjs,marcelgruber/darkroomjs,shelsonjava/darkroomjs