diff --git a/libs/async/source/threadpool.cpp b/libs/async/source/threadpool.cpp
index 6eab0d30..2b1d5a2f 100644
--- a/libs/async/source/threadpool.cpp
+++ b/libs/async/source/threadpool.cpp
@@ -20,7 +20,7 @@ namespace psemek::async
 	{
 		for (std::size_t th = 0; th < thread_count; ++th)
 		{
-			std::string tname = thread_count == 1 ? name : util::to_string(name, '#', th);
+			std::string tname = thread_count == 1 ? name : util::to_string(name, th);
 			threads_.emplace_back([this, tname = std::move(tname)]() mutable
 			{
 				log::thread_registrator reg(std::move(tname));