diff --git a/src/Storages/StorageTinyLog.cpp b/src/Storages/StorageTinyLog.cpp
index 60ff7de2ea0..cde7d6193f9 100644
--- a/src/Storages/StorageTinyLog.cpp
+++ b/src/Storages/StorageTinyLog.cpp
@@ -491,7 +491,7 @@ CheckResults StorageTinyLog::checkData(const ASTPtr & /* query */, const Context
 }
 
 void StorageTinyLog::truncate(
-    const ASTPtr &, const StorageMetadataPtr & metadata_snapshot, const Context & context, TableExclusiveLockHolder &)
+    const ASTPtr &, const StorageMetadataPtr & metadata_snapshot, const Context &, TableExclusiveLockHolder &)
 {
     disk->clearDirectory(table_path);
 
diff --git a/src/Storages/StorageTinyLog.h b/src/Storages/StorageTinyLog.h
index 41af1e3ff0c..9c412e4dd14 100644
--- a/src/Storages/StorageTinyLog.h
+++ b/src/Storages/StorageTinyLog.h
@@ -70,7 +70,7 @@ private:
     Files files;
 
     FileChecker file_checker;
-    mutable std::mutex mutex;
+    mutable std::shared_timed_mutex rwlock;
 
     Poco::Logger * log;