diff --git a/source/ecs/manager.d b/source/ecs/manager.d
index 95fd7b0..c315979 100644
--- a/source/ecs/manager.d
+++ b/source/ecs/manager.d
@@ -302,7 +302,7 @@ class EntityManager
                 return ret;
             }
 
-            static void callUpdate(ref CallData data, void* entity)
+            static void callUpdate(ref CallData data)
             {
                 Sys* s = cast(Sys*) data.system.m_system_pointer;
 
@@ -354,6 +354,10 @@ class EntityManager
 
         mixin(genCompList());
 
+        if(system.m_components)qsort(system.m_components.ptr, system.m_components.length, ushort.sizeof, &compareUShorts);
+        if(system.m_optional_components)qsort(system.m_optional_components.ptr, system.m_optional_components.length, ushort.sizeof, &compareUShorts);
+        if(system.m_absen_components)qsort(system.m_absen_components.ptr, system.m_absen_components.length, ushort.sizeof, &compareUShorts);
+
         ushort sys_id = systems_map.get(Sys.stringof, ushort.max);
         if (sys_id < systems.length)
         {
@@ -493,7 +497,7 @@ class EntityManager
             foreach (data; info.callers)
             {
                 if (data.system.enabled)
-                    (cast(SytemFuncType) data.system.m_update)(data, null); //caller(call_data,null);
+                    (cast(SytemFuncType) data.system.m_update)(data); //caller(call_data,null);
             }
         }
     }
@@ -1331,7 +1335,7 @@ class EntityManager
         EntityManager.EntityInfo* info;
     }
 
-    alias SytemFuncType = void function(ref EntityManager.CallData data, void* entity);
+    alias SytemFuncType = void function(ref EntityManager.CallData data);
 
     //alias sendSelfEvent = instance.event_manager.sendSelfEvent;
 
diff --git a/source/ecs/system.d b/source/ecs/system.d
index 38722e4..421321d 100644
--- a/source/ecs/system.d
+++ b/source/ecs/system.d
@@ -63,8 +63,8 @@ package:
     ///optional components
     ushort[] m_optional_components;
 
-    //void function(ref EntityManager.CallData data, void* entity) update;
-    void* m_update; ///workaroud for DMD bug with upper line
+    void function(ref EntityManager.CallData data) m_update;
+    //void* m_update; ///workaroud for DMD bug with upper line
 
     void function(void* system_pointer) m_enable;
     void function(void* system_pointer) m_disable;
@@ -74,4 +74,7 @@ package:
 
     void function(void* system_pointer) m_begin;
     void function(void* system_pointer) m_end;
+
+    void function(ref EntityManager.CallData data) m_initialize;
+    void function(ref EntityManager.CallData data) m_deinitilize;
 }