--- a/ai.c	Mon Feb 07 10:37:12 2005 +0000
+++ b/ai.c	Mon Feb 07 10:41:45 2005 +0000
@@ -1708,7 +1708,7 @@
 	byte old_player;
 	uint32 r;
 	uint slope;
-	int h;
+	uint h;
 
 	old_player = _current_player;
 	_current_player = OWNER_NONE;