diff --git a/tddb/td/db/SeqKeyValue.h b/tddb/td/db/SeqKeyValue.h
index f64ff0889..5d53a614b 100644
--- a/tddb/td/db/SeqKeyValue.h
+++ b/tddb/td/db/SeqKeyValue.h
@@ -62,9 +62,6 @@ class SeqKeyValue {
     return map_.size();
   }
 
-  void reset_seq_no() {
-    current_id_ = 0;
-  }
   std::unordered_map<string, string> get_all() const {
     return map_;
   }
diff --git a/tddb/td/db/SqliteKeyValue.cpp b/tddb/td/db/SqliteKeyValue.cpp
index 6887bc81a..aaafe0ed1 100644
--- a/tddb/td/db/SqliteKeyValue.cpp
+++ b/tddb/td/db/SqliteKeyValue.cpp
@@ -50,7 +50,7 @@ Status SqliteKeyValue::drop() {
   return result;
 }
 
-SqliteKeyValue::SeqNo SqliteKeyValue::set(Slice key, Slice value) {
+void SqliteKeyValue::set(Slice key, Slice value) {
   set_stmt_.bind_blob(1, key).ensure();
   set_stmt_.bind_blob(2, value).ensure();
   auto status = set_stmt_.step();
@@ -59,7 +59,6 @@ SqliteKeyValue::SeqNo SqliteKeyValue::set(Slice key, Slice value) {
   }
   // set_stmt_.step().ensure();
   set_stmt_.reset();
-  return 0;
 }
 
 string SqliteKeyValue::get(Slice key) {
@@ -76,11 +75,10 @@ string SqliteKeyValue::get(Slice key) {
   return data;
 }
 
-SqliteKeyValue::SeqNo SqliteKeyValue::erase(Slice key) {
+void SqliteKeyValue::erase(Slice key) {
   erase_stmt_.bind_blob(1, key).ensure();
   erase_stmt_.step().ensure();
   erase_stmt_.reset();
-  return 0;
 }
 
 void SqliteKeyValue::erase_by_prefix(Slice prefix) {
diff --git a/tddb/td/db/SqliteKeyValue.h b/tddb/td/db/SqliteKeyValue.h
index 1d920aaa0..026d2b402 100644
--- a/tddb/td/db/SqliteKeyValue.h
+++ b/tddb/td/db/SqliteKeyValue.h
@@ -27,8 +27,6 @@ class SqliteKeyValue {
     return connection.exec(PSLICE() << "CREATE TABLE IF NOT EXISTS " << table_name << " (k BLOB PRIMARY KEY, v BLOB)");
   }
 
-  using SeqNo = uint64;
-
   bool empty() const {
     return db_.empty();
   }
@@ -41,11 +39,11 @@ class SqliteKeyValue {
 
   Status drop();
 
-  SeqNo set(Slice key, Slice value);
+  void set(Slice key, Slice value);
 
   string get(Slice key);
 
-  SeqNo erase(Slice key);
+  void erase(Slice key);
 
   Status begin_read_transaction() TD_WARN_UNUSED_RESULT {
     return db_.begin_read_transaction();