diff --git a/tddb/td/db/SqliteDb.cpp b/tddb/td/db/SqliteDb.cpp
index 656a633c..c8bbc748 100644
--- a/tddb/td/db/SqliteDb.cpp
+++ b/tddb/td/db/SqliteDb.cpp
@@ -150,23 +150,21 @@ Status SqliteDb::commit_transaction() {
   return Status::OK();
 }
 
-bool SqliteDb::is_encrypted() {
-  return exec("SELECT count(*) FROM sqlite_master").is_error();
+Status SqliteDb::check_encryption() {
+  return exec("SELECT count(*) FROM sqlite_master");
 }
 
 Result<SqliteDb> SqliteDb::open_with_key(CSlice path, const DbKey &db_key) {
   SqliteDb db;
   TRY_STATUS(db.init(path));
   if (!db_key.is_empty()) {
-    if (!db.is_encrypted()) {
+    if (db.check_encryption().is_ok()) {
       return Status::Error("No key is needed");
     }
     auto key = db_key_to_sqlcipher_key(db_key);
     TRY_STATUS(db.exec(PSLICE() << "PRAGMA key = " << key));
   }
-  if (db.is_encrypted()) {
-    return Status::Error("Wrong key or database is corrupted");
-  }
+  TRY_STATUS_PREFIX(db.check_encryption(), "Can't open database: ");
   return std::move(db);
 }
 
diff --git a/tddb/td/db/SqliteDb.h b/tddb/td/db/SqliteDb.h
index 057a5e4a..9f7955bd 100644
--- a/tddb/td/db/SqliteDb.h
+++ b/tddb/td/db/SqliteDb.h
@@ -81,7 +81,7 @@ class SqliteDb {
   }
   std::shared_ptr<detail::RawSqliteDb> raw_;
 
-  bool is_encrypted();
+  Status check_encryption();
 };
 
 }  // namespace td