1 files changed, 1 insertions, 1 deletions
diff --git a/src/gui.h b/src/gui.h
index f985826c6..cfe9fa5b9 100644
--- a/src/gui.h
+++ b/src/gui.h
@@ -105,7 +105,7 @@ void ShowPlayerStations(PlayerID player);
 void ShowPlayerFinances(PlayerID player);
 void ShowPlayerCompany(PlayerID player);
 
-void ShowEstimatedCostOrIncome(int32 cost, int x, int y);
+void ShowEstimatedCostOrIncome(Money cost, int x, int y);
 void ShowErrorMessage(StringID msg_1, StringID msg_2, int x, int y);
 
 void DrawStationCoverageAreaText(int sx, int sy, uint mask,int rad);