diff --git a/app/src/main/java/com/example/sprout/refactor/activity/RoomListActivity.java b/app/src/main/java/com/example/sprout/refactor/activity/RoomListActivity.java
index a53406d..c2a54e8 100644
--- a/app/src/main/java/com/example/sprout/refactor/activity/RoomListActivity.java
+++ b/app/src/main/java/com/example/sprout/refactor/activity/RoomListActivity.java
@@ -9,7 +9,6 @@
 import com.example.sprout.R;
 import com.example.sprout.databinding.RfActivityRoomListBinding;
 import com.example.sprout.refactor.adapter.RoomListAdapter;
-import com.example.sprout.refactor.contract.ViewContract;
 import com.example.sprout.refactor.viewmodel.RoomListViewModel;
 
 import io.reactivex.android.schedulers.AndroidSchedulers;
@@ -25,7 +24,7 @@
 
     private RfActivityRoomListBinding binding = null;
     private RoomListViewModel roomListViewModel = null;
-    private CompositeDisposable subscriptions = new CompositeDisposable();
+    private CompositeDisposable subscriptions = null;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
@@ -39,6 +38,7 @@
     @Override
     protected void onResume() {
         super.onResume();
+        subscriptions = new CompositeDisposable();
         subscribe();
     }