--- a/misc.c	Sat Jan 22 22:46:10 2005 +0000
+++ b/misc.c	Sat Jan 22 22:47:58 2005 +0000
@@ -569,7 +569,7 @@
 void OnNewDay_RoadVeh(Vehicle *v);
 void OnNewDay_Aircraft(Vehicle *v);
 void OnNewDay_Ship(Vehicle *v);
-void OnNewDay_EffectVehicle(Vehicle *v) { /* empty */ }
+static void OnNewDay_EffectVehicle(Vehicle *v) { /* empty */ }
 void OnNewDay_DisasterVehicle(Vehicle *v);
 
 typedef void OnNewVehicleDayProc(Vehicle *v);