diff --git a/src/newgrf_object.h b/src/newgrf_object.h
--- a/src/newgrf_object.h
+++ b/src/newgrf_object.h
@@ -52,7 +52,10 @@ enum ObjectClassID {
 /** Allow incrementing of ObjectClassID variables */
 DECLARE_POSTFIX_INCREMENT(ObjectClassID)
 
-/** An object that isn't use for transport, industries or houses. */
+/** An object that isn't use for transport, industries or houses.
+ * @note If you change this struct, adopt the initialization of
+ * default objects in table/object_land.h
+ */
 struct ObjectSpec {
 	/* 2 because of the "normal" and "buy" sprite stacks. */
 	GRFFilePropsBase<2> grf_prop; ///< Properties related the the grf file
diff --git a/src/table/object_land.h b/src/table/object_land.h
--- a/src/table/object_land.h
+++ b/src/table/object_land.h
@@ -123,7 +123,7 @@ static const DrawTileSprites _object_hq[
 
 #undef TILE_SPRITE_LINE
 
-#define M(name, size, build_cost_multiplier, clear_cost_multiplier, height, flags) { GRFFilePropsBase<2>(), INVALID_OBJECT_CLASS, name, 0xF, size, 0, 0, build_cost_multiplier, clear_cost_multiplier, flags, {0, 0, 0, 0}, 0, height, 1, true }
+#define M(name, size, build_cost_multiplier, clear_cost_multiplier, height, flags) { GRFFilePropsBase<2>(), INVALID_OBJECT_CLASS, name, 0xF, size, build_cost_multiplier, clear_cost_multiplier, 0, 0, flags, {0, 0, 0, 0}, 0, height, 1, true }
 
 /** Specification of the original object structures. */
 extern const ObjectSpec _original_objects[] = {