diff --git a/ipmitool/include/ipmitool/ipmi_intf.h b/ipmitool/include/ipmitool/ipmi_intf.h
index ba78f6b..0005131 100644
--- a/ipmitool/include/ipmitool/ipmi_intf.h
+++ b/ipmitool/include/ipmitool/ipmi_intf.h
@@ -80,6 +80,7 @@ struct ipmi_session {
 	unsigned char authstatus;
 	unsigned char authextra;
 	unsigned char privlvl;
+	unsigned char authspecial; /* special auth flag */
 	int password;
 	int port;
 	int active;