diff --git a/include/coro_io/client_pool.hpp b/include/coro_io/client_pool.hpp
index f53f44fec..bf261db50 100644
--- a/include/coro_io/client_pool.hpp
+++ b/include/coro_io/client_pool.hpp
@@ -68,7 +68,6 @@ class client_pool : public std::enable_shared_from_this<
       std::unique_ptr<client_t> client;
       while (true) {
         std::size_t is_all_cleared = self->free_clients_.clear_old(10000);
-        std::cout << "is_all_cleared" << std::endl;
         if (is_all_cleared != 0) [[unlikely]] {
           co_await async_simple::coro::Yield{};
         }