--- a/src/ai/api/ai_engine.cpp	Thu Nov 22 23:01:41 2007 +0000
+++ b/src/ai/api/ai_engine.cpp	Fri Nov 23 16:59:30 2007 +0000
@@ -11,7 +11,7 @@
 
 /* static */ bool AIEngine::IsValidEngine(EngineID engine_id)
 {
-	return ::IsEngineIndex(engine_id) && HASBIT(GetEngine(engine_id)->player_avail, _current_player);
+	return ::IsEngineIndex(engine_id) && HasBit(GetEngine(engine_id)->player_avail, _current_player);
 }
 
 /* static */ char *AIEngine::GetName(EngineID engine_id)