diff --git a/common/eq_packet_structs.h b/common/eq_packet_structs.h
index c4cbea4fb..bde77822b 100644
--- a/common/eq_packet_structs.h
+++ b/common/eq_packet_structs.h
@@ -379,7 +379,8 @@ struct NewZone_Struct {
 /*0708*/	uint32	FastRegenHP;
 /*0712*/	uint32	FastRegenMana;
 /*0716*/	uint32	FastRegenEndurance;
-/*0720*/
+/*0720*/	uint32	NPCAggroMaxDist;
+/*0724*/
 };
 
 /*
diff --git a/common/version.h b/common/version.h
index a6ea279c5..a7e066ab1 100644
--- a/common/version.h
+++ b/common/version.h
@@ -30,7 +30,7 @@
 	Manifest: https://github.com/EQEmu/Server/blob/master/utils/sql/db_update_manifest.txt
 */
 
-#define CURRENT_BINARY_DATABASE_VERSION 9126
+#define CURRENT_BINARY_DATABASE_VERSION 9127
 #ifdef BOTS
 	#define CURRENT_BINARY_BOTS_DATABASE_VERSION 9019
 #else
diff --git a/utils/sql/db_update_manifest.txt b/utils/sql/db_update_manifest.txt
index d0efc8d74..e84395a54 100644
--- a/utils/sql/db_update_manifest.txt
+++ b/utils/sql/db_update_manifest.txt
@@ -380,6 +380,7 @@
 9124|2018_07_09_tasks.sql|SHOW COLUMNS FROM `tasks` LIKE 'type'|empty|
 9125|2018_07_20_task_emote.sql|SHOW COLUMNS FROM `tasks` LIKE 'completion_emote'|empty|
 9126|2018_09_07_FastRegen.sql|SHOW COLUMNS FROM `zone` LIKE 'fast_regen_hp'|empty|
+9127|2018_09_07_NPCMaxAggroDist.sql|SHOW COLUMNS FROM `zone` LIKE 'npc_max_aggro_dist'|empty|
 
 # Upgrade conditions:
 # 	This won't be needed after this system is implemented, but it is used database that are not
diff --git a/utils/sql/git/required/2018_09_07_NPCMaxAggroDist.sql b/utils/sql/git/required/2018_09_07_NPCMaxAggroDist.sql
new file mode 100644
index 000000000..239a483a5
--- /dev/null
+++ b/utils/sql/git/required/2018_09_07_NPCMaxAggroDist.sql
@@ -0,0 +1 @@
+ALTER TABLE `zone` ADD `npc_max_aggro_dist` INT NOT NULL DEFAULT '600';
diff --git a/zone/mob_ai.cpp b/zone/mob_ai.cpp
index 5fd422035..766929c97 100644
--- a/zone/mob_ai.cpp
+++ b/zone/mob_ai.cpp
@@ -1194,7 +1194,7 @@ void Mob::AI_Process() {
 		// NPCs will forget people after 10 mins of not interacting with them or out of range
 		// both of these maybe zone specific, hardcoded for now
 		if (hate_list_cleanup_timer.Check()) {
-			hate_list.RemoveStaleEntries(600000, 600.0f);
+			hate_list.RemoveStaleEntries(600000, static_cast<float>(zone->newzone_data.NPCAggroMaxDist));
 			if (hate_list.IsHateListEmpty()) {
 				AI_Event_NoLongerEngaged();
 				zone->DelAggroMob();
diff --git a/zone/zonedb.cpp b/zone/zonedb.cpp
index b08b0d32d..cced38aac 100644
--- a/zone/zonedb.cpp
+++ b/zone/zonedb.cpp
@@ -146,7 +146,8 @@ bool ZoneDatabase::GetZoneCFG(uint32 zoneid, uint16 instance_id, NewZone_Struct
 		"gravity, "					 // 56
 		"fast_regen_hp, "			 // 57
 		"fast_regen_mana, "			 // 58
-		"fast_regen_endurance "		 // 59
+		"fast_regen_endurance, "	 // 59
+		"npc_max_aggro_dist "		 // 60
 		"FROM zone WHERE zoneidnumber = %i AND version = %i",
 		zoneid, instance_id);
 	auto results = QueryDatabase(query);
@@ -194,6 +195,7 @@ bool ZoneDatabase::GetZoneCFG(uint32 zoneid, uint16 instance_id, NewZone_Struct
 	zone_data->FastRegenHP = atoi(row[57]);
 	zone_data->FastRegenMana = atoi(row[58]);
 	zone_data->FastRegenEndurance = atoi(row[59]);
+	zone_data->NPCAggroMaxDist = atoi(row[60]);
 
 	int bindable = 0;
 	bindable = atoi(row[31]);