diff --git a/app/src/main/java/org/mercury_im/messenger/di/module/AndroidPersistenceModule.java b/app/src/main/java/org/mercury_im/messenger/di/module/AndroidPersistenceModule.java
index 0ea8b80..05ad91a 100644
--- a/app/src/main/java/org/mercury_im/messenger/di/module/AndroidPersistenceModule.java
+++ b/app/src/main/java/org/mercury_im/messenger/di/module/AndroidPersistenceModule.java
@@ -29,16 +29,12 @@ public class AndroidPersistenceModule {
     @Singleton
     static ReactiveEntityStore<Persistable> provideDatabase(Application application) {
         // override onUpgrade to handle migrating to a new version
-        DatabaseSource source = new DatabaseSource(application, Models.DEFAULT,
-                "mercury_req_db", 1);
+        DatabaseSource source = new DatabaseSource(application, Models.DEFAULT, "mercury_req_db", 1);
         if (BuildConfig.DEBUG) {
-            // use this in development mode to drop and recreate the tables on every upgrade
             source.setTableCreationMode(TableCreationMode.DROP_CREATE);
         }
         Configuration configuration = source.getConfiguration();
-        ReactiveEntityStore<Persistable> dataStore = ReactiveSupport.toReactiveStore(
-                new EntityDataStore<>(configuration));
-        return dataStore;
+        return ReactiveSupport.toReactiveStore(new EntityDataStore<>(configuration));
     }
 
     @Provides