diff -r 4cc327ad39d5 -r 35756db7e577 src/disaster_cmd.cpp
--- a/src/disaster_cmd.cpp	Sat Jun 02 19:59:29 2007 +0000
+++ b/src/disaster_cmd.cpp	Sat Jul 14 19:42:58 2007 +0000
@@ -742,9 +742,9 @@
 };
 
 
-void DisasterVehicle_Tick(Vehicle *v)
+void DisasterVehicle::Tick()
 {
-	_disastervehicle_tick_procs[v->subtype](v);
+	_disastervehicle_tick_procs[this->subtype](this);
 }