diff --git a/include/spdlog/details/thread_pool.h b/include/spdlog/details/thread_pool.h
index 1cd11315..11b9d429 100644
--- a/include/spdlog/details/thread_pool.h
+++ b/include/spdlog/details/thread_pool.h
@@ -108,8 +108,7 @@ class thread_pool
 {
 public:
     using item_type = async_msg;
-    using q_type = details::mpmc_blocking_queue<item_type>;
-    using clock_type = std::chrono::steady_clock;
+    using q_type = details::mpmc_blocking_queue<item_type>;    
 
     thread_pool(size_t q_max_items, size_t threads_n)
         : q_(q_max_items)
diff --git a/tests/.vs/tests/v15/Browse.VC.db b/tests/.vs/tests/v15/Browse.VC.db
new file mode 100644
index 00000000..225f4f0b
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diff --git a/tests/.vs/tests/v15/ipch/AutoPCH/945b5b8b65520f8e/ERRORS.ipch b/tests/.vs/tests/v15/ipch/AutoPCH/945b5b8b65520f8e/ERRORS.ipch
new file mode 100644
index 00000000..418fe745
Binary files /dev/null and b/tests/.vs/tests/v15/ipch/AutoPCH/945b5b8b65520f8e/ERRORS.ipch differ