diff --git a/src/protocol/mysql_types.h b/src/protocol/mysql_types.h
index 6e4ee4a5..238ec296 100644
--- a/src/protocol/mysql_types.h
+++ b/src/protocol/mysql_types.h
@@ -23,8 +23,8 @@
 #define MYSQL_STATE_LENGTH			5
 #define MYSQL_STATE_DEFAULT			"HY000"
 
-// may be set by server in EOF/OK packet
 #define MYSQL_SERVER_MORE_RESULTS_EXIST		0x0008
+#define MYSQL_SERVER_SESSION_STATE_CHANGED	0x4000
 
 enum
 {