diff --git a/src/train_gui.cpp b/src/train_gui.cpp
--- a/src/train_gui.cpp
+++ b/src/train_gui.cpp
@@ -81,7 +81,7 @@ void DrawTrainImage(const Vehicle *v, in
 	_cur_dpi = &tmp_dpi;
 
 	do {
-		int width = v->u.rail.cached_veh_length;
+		int width = ((Train *)v)->tcache.cached_veh_length;
 
 		if (dx + width > 0) {
 			if (dx <= count) {
@@ -228,7 +228,7 @@ void DrawTrainDetails(const Vehicle *v, 
 				do {
 					SpriteID pal = (v->vehstatus & VS_CRASHED) ? PALETTE_CRASH : GetVehiclePalette(v);
 					DrawSprite(u->GetImage(DIR_W), pal, x + WagonLengthToPixels(4 + dx), y + 6 + (is_custom_sprite(RailVehInfo(u->engine_type)->image_index) ? _traininfo_vehicle_pitch : 0));
-					dx += u->u.rail.cached_veh_length;
+					dx += ((Train *)u)->tcache.cached_veh_length;
 					u = u->Next();
 				} while (u != NULL && IsArticulatedPart(u) && u->cargo_cap == 0);