diff --git a/app/src/main/java/jackall/devrealm/viewmodel/MainViewModel.kt b/app/src/main/java/jackall/devrealm/viewmodel/MainViewModel.kt
index c0eef88..3f19c58 100644
--- a/app/src/main/java/jackall/devrealm/viewmodel/MainViewModel.kt
+++ b/app/src/main/java/jackall/devrealm/viewmodel/MainViewModel.kt
@@ -6,6 +6,8 @@
 import android.support.v7.widget.LinearLayoutManager
 import android.support.v7.widget.RecyclerView
 import android.view.View
+import io.realm.OrderedRealmCollectionChangeListener
+import io.realm.RealmResults
 import jackall.devrealm.App
 import jackall.devrealm.adapter.MainAdapter
 import jackall.devrealm.db.PersonRealmHelper
@@ -19,22 +21,24 @@
 
     var adapter: MainAdapter? = null
     val personRealmHelper = PersonRealmHelper()
+    lateinit var realmChangeListener: OrderedRealmCollectionChangeListener<RealmResults<Person>>
 
     override fun onCreate() {
         super.onCreate()
         val items = ArrayList<ItemViewModel>()
+        realmChangeListener = OrderedRealmCollectionChangeListener { results, changeSet ->
+            changeSet.insertions.forEach {
+                adapter?.insert(ItemViewModel(results.get(it)))
+            }
+            changeSet.deletions.forEach {
+                adapter?.remove(it)
+            }
+        }
         personRealmHelper.findAll().apply {
             forEach {
                 items.add(ItemViewModel(it))
             }
-            addChangeListener { results, changeSet ->
-                changeSet.insertions.forEach {
-                    adapter?.insert(ItemViewModel(results.get(it)))
-                }
-                changeSet.deletions.forEach {
-                    adapter?.remove(it)
-                }
-            }
+            addChangeListener(realmChangeListener)
         }
         adapter = MainAdapter(App.instance, items)
     }