diff --git a/src/ai/api/ai_map.cpp b/src/ai/api/ai_map.cpp
index b3a7f753c5..dd6151f198 100644
--- a/src/ai/api/ai_map.cpp
+++ b/src/ai/api/ai_map.cpp
@@ -40,7 +40,6 @@
 
 /* static */ TileIndex AIMap::GetTileIndex(uint32 x, uint32 y)
 {
-	if (x >= ::MapSizeX() || y >= MapSizeY()) return INVALID_TILE;
 	return ::TileXY(x, y);
 }