--- a/src/ai/api/ai_company.hpp	Thu Apr 03 23:01:54 2008 +0000
+++ b/src/ai/api/ai_company.hpp	Fri Apr 04 10:43:13 2008 +0000
@@ -130,6 +130,7 @@
 	 * @param tile The tile to build your HQ on, this tile is the most nothern tile of your HQ.
 	 * @pre AIMap::IsValidTile(tile).
 	 * @exception AIError::ERR_AREA_NOT_CLEAR
+	 * @exception AIError::ERR_FLAT_LAND_REQUIRED
 	 * @return True if the HQ could be build.
 	 * @note An HQ can not be removed, only by water or rebuilding; If an HQ is
 	 *  build again, the old one is removed.