diff --git a/releases/3.1/source/mod/AvHCommandConstants.h b/releases/3.1/source/mod/AvHCommandConstants.h
index 7900670..4d558a0 100644
--- a/releases/3.1/source/mod/AvHCommandConstants.h
+++ b/releases/3.1/source/mod/AvHCommandConstants.h
@@ -82,6 +82,7 @@
 #define kcOrderSelf					"orderself"
 #define	kcParasite					"parasite"
 #define kcKillAll					"killall"
+#define kcAuth						"auth"
 #define kcStun						"stun"
 #define kcBoxes						"boxes"
 #define kcOverflow					"overflow"