--- a/src/disaster_cmd.cpp	Sun Jul 01 19:11:47 2007 +0000
+++ b/src/disaster_cmd.cpp	Sun Jul 01 19:24:54 2007 +0000
@@ -741,9 +741,9 @@
 };
 
 
-void DisasterVehicle_Tick(Vehicle *v)
+void DisasterVehicle::Tick()
 {
-	_disastervehicle_tick_procs[v->subtype](v);
+	_disastervehicle_tick_procs[this->subtype](this);
 }