A 15-year-old Christchurch schoolboy drowned when his family misread a sign, assuming that because it showed a person swimming it meant the river was safe.
Since Haenga Puhuipuhi-Albert's death in February 2010, Environment Canterbury has replaced the sign at a bridge over the Waimakariri River in North Canterbury.
But when Haenga was swimming at the river with his family on a sunny afternoon the sign on the bridge read "Think water safety if swimming" showing a large picture of a swimmer in an arrow pointing to the water.
A coroner's findings into Haenga's death, released this week, said Haenga's father and stepmother saw the sign but were critical of its clarity.
It was the same spot where, in January 2008, 16-year-old Lale Sioa Taiulu and 26-year-old Larry Pau drowned, after being swept away by strong currents.