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-rw-r--r--src/rail.h6
1 files changed, 4 insertions, 2 deletions
diff --git a/src/rail.h b/src/rail.h
index 7e3cd4b75..f90105242 100644
--- a/src/rail.h
+++ b/src/rail.h
@@ -183,7 +183,8 @@ static inline Money RailConvertCost(RailType from, RailType to)
* (the price of workers to get to place is that 1/4)
*/
if (HasPowerOnRail(from, to)) {
- return ((RailBuildCost(to) - RailBuildCost(from)) * 5) >> 2;
+ Money cost = ((RailBuildCost(to) - RailBuildCost(from)) * 5) >> 2;
+ if (cost != 0) return cost;
}
/* el. rail -> rail
@@ -191,7 +192,8 @@ static inline Money RailConvertCost(RailType from, RailType to)
* (the price of workers is 1 / 4 + price of copper sold to a recycle center)
*/
if (HasPowerOnRail(to, from)) {
- return (RailBuildCost(from) - RailBuildCost(to)) >> 2;
+ Money cost = (RailBuildCost(from) - RailBuildCost(to)) >> 2;
+ if (cost != 0) return cost;
}
/* make the price the same as remove + build new type */