diff --git a/src/newgrf_spritegroup.h b/src/newgrf_spritegroup.h
index 3a13a3bbe4..f95dd37484 100644
--- a/src/newgrf_spritegroup.h
+++ b/src/newgrf_spritegroup.h
@@ -330,7 +330,7 @@ struct ResolverObject {
 		} canal;
 		struct {
 			TileIndex tile;
-			const struct BaseStation *st;
+			struct BaseStation *st;
 			const struct StationSpec *statspec;
 			CargoID cargo_type;
 		} station;
diff --git a/src/newgrf_station.cpp b/src/newgrf_station.cpp
index 00b4d5f97c..83fca3d243 100644
--- a/src/newgrf_station.cpp
+++ b/src/newgrf_station.cpp
@@ -517,7 +517,7 @@ static const SpriteGroup *StationResolveReal(const ResolverObject *object, const
 }
 
 
-static void NewStationResolver(ResolverObject *res, const StationSpec *statspec, const BaseStation *st, TileIndex tile)
+static void NewStationResolver(ResolverObject *res, const StationSpec *statspec, BaseStation *st, TileIndex tile)
 {
 	res->GetRandomBits = StationGetRandomBits;
 	res->GetTriggers   = StationGetTriggers;
@@ -585,7 +585,7 @@ static const SpriteGroup *ResolveStation(ResolverObject *object)
  * @param var10 Value to put in variable 10; normally 0; 1 when resolving the groundsprite and SSF_SEPARATE_GROUND is set.
  * @return First sprite of the Action 1 spriteset ot use, minus an offset of 0x42D to accommodate for weird NewGRF specs.
  */
-SpriteID GetCustomStationRelocation(const StationSpec *statspec, const BaseStation *st, TileIndex tile, uint32 var10)
+SpriteID GetCustomStationRelocation(const StationSpec *statspec, BaseStation *st, TileIndex tile, uint32 var10)
 {
 	const SpriteGroup *group;
 	ResolverObject object;
@@ -607,7 +607,7 @@ SpriteID GetCustomStationRelocation(const StationSpec *statspec, const BaseStati
  * @param edge_info Information about northern tile edges; whether they need foundations or merge into adjacent tile's foundations.
  * @return First sprite of a set of foundation sprites for various slopes.
  */
-SpriteID GetCustomStationFoundationRelocation(const StationSpec *statspec, const BaseStation *st, TileIndex tile, uint layout, uint edge_info)
+SpriteID GetCustomStationFoundationRelocation(const StationSpec *statspec, BaseStation *st, TileIndex tile, uint layout, uint edge_info)
 {
 	const SpriteGroup *group;
 	ResolverObject object;
diff --git a/src/newgrf_station.h b/src/newgrf_station.h
index e1da520c95..fe924d51de 100644
--- a/src/newgrf_station.h
+++ b/src/newgrf_station.h
@@ -111,7 +111,7 @@ const StationSpec *GetStationSpec(TileIndex t);
 /* Evaluate a tile's position within a station, and return the result a bitstuffed format. */
 uint32 GetPlatformInfo(Axis axis, byte tile, int platforms, int length, int x, int y, bool centred);
 
-SpriteID GetCustomStationRelocation(const StationSpec *statspec, const BaseStation *st, TileIndex tile, uint32 var10 = 0);
+SpriteID GetCustomStationRelocation(const StationSpec *statspec, BaseStation *st, TileIndex tile, uint32 var10 = 0);
 SpriteID GetCustomStationFoundationRelocation(const StationSpec *statspec, const BaseStation *st, TileIndex tile, uint layout, uint edge_info);
 uint16 GetStationCallback(CallbackID callback, uint32 param1, uint32 param2, const StationSpec *statspec, BaseStation *st, TileIndex tile);