--- a/aircraft_cmd.c	Sat Jan 22 19:41:30 2005 +0000
+++ b/aircraft_cmd.c	Sat Jan 22 20:23:18 2005 +0000
@@ -537,7 +537,7 @@
 	InvalidateWindowClasses(WC_AIRCRAFT_LIST);
 }
 
-void AircraftYearlyLoop()
+void AircraftYearlyLoop(void)
 {
 	Vehicle *v;
 
@@ -1875,7 +1875,7 @@
 }
 
 // need to be called to load aircraft from old version
-void UpdateOldAircraft()
+void UpdateOldAircraft(void)
 {
 	Station *st;
 	Vehicle *v_oldstyle;