diff --git a/src/sinks/base_sink.cpp b/src/sinks/base_sink.cpp
index 1e1eaab5..8fd7d11b 100644
--- a/src/sinks/base_sink.cpp
+++ b/src/sinks/base_sink.cpp
@@ -59,5 +59,5 @@ void spdlog::sinks::base_sink<Mutex>::set_formatter_(std::unique_ptr<spdlog::for
 }
 
 // template instantiations
-template class spdlog::sinks::base_sink<std::mutex>;
-template class spdlog::sinks::base_sink<spdlog::details::null_mutex>;
+template class SPDLOG_API spdlog::sinks::base_sink<std::mutex>;
+template class SPDLOG_API spdlog::sinks::base_sink<spdlog::details::null_mutex>;