diff --git a/td/telegram/TdDb.cpp b/td/telegram/TdDb.cpp
index 9f4b946e..4b2b35d8 100644
--- a/td/telegram/TdDb.cpp
+++ b/td/telegram/TdDb.cpp
@@ -313,18 +313,16 @@ Status TdDb::init_sqlite(int32 scheduler_id, const TdParameters &parameters, DbK
   LOG(WARNING) << "Got PRAGMA user_version = " << user_version;
 
   // init DialogDb
+  TRY_STATUS(drop_dialog_db(db, user_version));
   bool dialog_db_was_created = false;
   if (use_dialog_db) {
     TRY_STATUS(init_dialog_db(db, user_version, dialog_db_was_created));
-  } else {
-    TRY_STATUS(drop_dialog_db(db, user_version));
   }
 
   // init MessagesDb
+  TRY_STATUS(drop_messages_db(db, user_version));
   if (use_message_db) {
     TRY_STATUS(init_messages_db(db, user_version));
-  } else {
-    TRY_STATUS(drop_messages_db(db, user_version));
   }
 
   // init filesDb
@@ -355,6 +353,8 @@ Status TdDb::init_sqlite(int32 scheduler_id, const TdParameters &parameters, DbK
   binlog_pmc.force_sync({});
 
   TRY_STATUS(db.exec("COMMIT TRANSACTION"));
+  TRY_STATUS(db.exec("VACUUM"));
+  TRY_STATUS(db.exec("BEGIN TRANSACTION"));
 
   file_db_ = create_file_db(sql_connection_, scheduler_id);