diff --git a/zone/merc.cpp b/zone/merc.cpp
index bb549f830..ffc3075ff 100644
--- a/zone/merc.cpp
+++ b/zone/merc.cpp
@@ -2445,7 +2445,7 @@ void Merc::CheckHateList() {
 
 					for(std::list<NPC*>::iterator itr = npc_list.begin(); itr != npc_list.end(); ++itr) {
 						NPC* npc = *itr;
-						float dist = npc->DistNoRootNoZ(*this);
+						float dist = ComparativeDistanceNoZ(m_Position, npc->GetPosition());
 						int radius = RuleI(Mercs, AggroRadius);
 						radius *= radius;
 						if(dist <= radius) {