diff --git a/src/settings_type.h b/src/settings_type.h
--- a/src/settings_type.h
+++ b/src/settings_type.h
@@ -355,8 +355,8 @@ struct ConstructionSettings {
 	uint16 clear_frame_burst;                ///< how many tiles may, over a short period, be cleared?
 	uint32 tree_per_64k_frames;              ///< how many trees may, over a long period, be planted per 65536 frames?
 	uint16 tree_frame_burst;                 ///< how many trees may, over a short period, be planted?
-	uint32 build_object_per_64k_frames;      ///< how many tiles may, over a long period, have objects built on them per 65536 frames?
-	uint16 build_object_frame_burst;         ///< how many tiles may, over a short period, have objects built on them?
+	uint32 build_object_per_64k_frames;      ///< how many tiles may, over a long period, be purchased or have objects built on them per 65536 frames?
+	uint16 build_object_frame_burst;         ///< how many tiles may, over a short period, be purchased or have objects built on them?
 };
 
 /** Settings related to the AI. */