diff --git a/common/dynamic_zone_base.cpp b/common/dynamic_zone_base.cpp
index 18fe69aa8..4ad08c2db 100644
--- a/common/dynamic_zone_base.cpp
+++ b/common/dynamic_zone_base.cpp
@@ -60,14 +60,14 @@ uint32_t DynamicZoneBase::CreateInstance()
 	insert_instance.never_expires = m_never_expires;
 	insert_instance.expire_at = insert_instance.start_time + insert_instance.duration;
 
-	auto instance = InstanceListRepository::InsertOne(GetDatabase(), insert_instance);
-	if (instance.id == 0)
+	auto instance = InstanceListRepository::ReplaceOne(GetDatabase(), insert_instance);
+	if (!instance)
 	{
 		LogDynamicZones("Failed to create instance [{}] for zone [{}]", unused_instance_id, m_zone_id);
 		return 0;
 	}
 
-	m_instance_id = instance.id;
+	m_instance_id = unused_instance_id;
 
 	return m_instance_id;
 }