diff --git a/zone/aa.h b/zone/aa.h
index ce6f9ea68..ad41fc3ae 100644
--- a/zone/aa.h
+++ b/zone/aa.h
@@ -2156,6 +2156,7 @@ enum {	//values of AA_Action.action
 };
 
 class Timer;
+class Mob;
 class AA_SwarmPetInfo {
 public:
 	AA_SwarmPetInfo();