diff --git a/include/libtorrent/alert_types.hpp b/include/libtorrent/alert_types.hpp
index c276af4a2..0ea15ad52 100644
--- a/include/libtorrent/alert_types.hpp
+++ b/include/libtorrent/alert_types.hpp
@@ -192,12 +192,12 @@ namespace libtorrent
 			download_limit_too_low,
 			send_buffer_watermark_too_low,
 			too_many_optimistic_unchoke_slots,
-			bittyrant_with_no_uplimit
-
+			bittyrant_with_no_uplimit,
 
 
 
 
+			num_warnings
 		};
 
 		performance_alert(torrent_handle const& h