diff --git a/entity2/entitysystem.cpp b/entity2/entitysystem.cpp
index efd3996f..06a9e38b 100644
--- a/entity2/entitysystem.cpp
+++ b/entity2/entitysystem.cpp
@@ -313,6 +313,15 @@ EntityInstanceByClassIter_t::EntityInstanceByClassIter_t(const char* szClassName
 	}
 }
 
+EntityInstanceByClassIter_t::EntityInstanceByClassIter_t(CEntityInstance* pStart, char const* szClassName, IEntityFindFilter* pFilter = nullptr, EntityIterType_t eIterType = ENTITY_ITER_OVER_ACTIVE)
+{
+	m_pCurrentEnt = pStart ? pStart->m_pEntity : nullptr;
+	m_pFilter = pFilter;
+	m_eIterType = eIterType;
+	m_pszClassName = szClassName;
+	m_pEntityClass = NULL;
+}
+
 CEntityInstance* EntityInstanceByClassIter_t::First()
 {
 	m_pCurrentEnt = nullptr;
diff --git a/public/entity2/entitysystem.h b/public/entity2/entitysystem.h
index 68d65e29..5aeb9567 100644
--- a/public/entity2/entitysystem.h
+++ b/public/entity2/entitysystem.h
@@ -408,6 +408,7 @@ class EntityInstanceByClassIter_t
 {
 public:
 	EntityInstanceByClassIter_t(const char* szClassName, IEntityFindFilter* pFilter = nullptr, EntityIterType_t eIterType = ENTITY_ITER_OVER_ACTIVE);
+	EntityInstanceByClassIter_t(CEntityInstance* pStart, char const* szClassName, IEntityFindFilter* pFilter = nullptr, EntityIterType_t eIterType = ENTITY_ITER_OVER_ACTIVE);
 
 	CEntityInstance* First();
 	CEntityInstance* Next();