diff --git a/src/ai/trolly/shared.cpp b/src/ai/trolly/shared.cpp
--- a/src/ai/trolly/shared.cpp
+++ b/src/ai/trolly/shared.cpp
@@ -7,7 +7,7 @@
 #include "../../debug.h"
 #include "../../map_func.h"
 #include "../../vehicle_base.h"
-#include "../../player_base.h"
+#include "../../company_base.h"
 #include "trolly.h"
 
 int AiNew_GetRailDirection(TileIndex tile_a, TileIndex tile_b, TileIndex tile_c)