Index: src/economy.cpp
===================================================================
--- src/economy.cpp	(revision 14274)
+++ src/economy.cpp	(working copy)
@@ -1199,7 +1199,7 @@
 	} else if (days_over_days1 <= days2) {
 		time_factor = MAX_TIME_FACTOR - days_over_days1;
 	} else {
-		time_factor = MAX_TIME_FACTOR - 2 * days_over_days1 + days2;
+	  time_factor = MAX_TIME_FACTOR - 3*transit_days + days1 + 2 * days2;
 	}
 
 	if (time_factor < MIN_TIME_FACTOR) time_factor = MIN_TIME_FACTOR;