diff --git a/include/spdlog/mdc.h b/include/spdlog/mdc.h
index 3693ecdf..9b1a80ee 100644
--- a/include/spdlog/mdc.h
+++ b/include/spdlog/mdc.h
@@ -1,9 +1,12 @@
 #pragma once
 
 #include <map>
+#include <string>
+
+#include <spdlog/common.h>
 
 namespace spdlog {
-    class mdc {
+    class SPDLOG_API mdc {
     public:
         using mdc_map_t = std::map<std::string, std::string>;
 
@@ -30,4 +33,4 @@ namespace spdlog {
         }
     };
 
-}  // namespace spdlog
\ No newline at end of file
+}  // namespace spdlog