diff --git a/Source/Lib/Lib.cpp b/Source/Lib/Lib.cpp
index 48491f5e..c0f2ee17 100644
--- a/Source/Lib/Lib.cpp
+++ b/Source/Lib/Lib.cpp
@@ -19,6 +19,8 @@
 #include <ZenLib/File.h>
 #if !defined(WINDOWS)
     #include <unistd.h>
+#else
+    #include <windows.h>
 #endif //!defined(WINDOWS)
 #include <algorithm>
 
diff --git a/Source/Lib/MediaConchDLL.h b/Source/Lib/MediaConchDLL.h
index a90efcf4..7418833c 100644
--- a/Source/Lib/MediaConchDLL.h
+++ b/Source/Lib/MediaConchDLL.h
@@ -49,7 +49,11 @@ typedef enum MediaConch_report_t
     report_Max,
 } MediaConch_report_c;
 
+#if defined(_MSC_VER)
+#define MEDIACONCH_EXPORT __declspec(dllexport)
+#else
 #define MEDIACONCH_EXPORT __attribute__ ((visibility("default")))
+#endif
 
 #ifdef __cplusplus
 extern "C"