diff --git a/include/Nazara/Core/DynLib.hpp b/include/Nazara/Core/DynLib.hpp
index 7359bca5f..0c8d94655 100644
--- a/include/Nazara/Core/DynLib.hpp
+++ b/include/Nazara/Core/DynLib.hpp
@@ -11,14 +11,25 @@
 #include <Nazara/Core/NonCopyable.hpp>
 #include <Nazara/Core/String.hpp>
 
+#if defined(NAZARA_PLATFORM_WINDOWS)
+	#define NAZARA_DYNLIB_EXTENSION ".dll"
+#elif defined(NAZARA_PLATFORM_LINUX)
+	#define NAZARA_DYNLIB_EXTENSION ".so"
+#elif defined(NAZARA_PLATFORM_MACOSX)
+	#define NAZARA_DYNLIB_EXTENSION ".dynlib"
+#else
+	#error OS not handled
+#endif
+
 #if NAZARA_CORE_THREADSAFE && NAZARA_THREADSAFETY_DYNLIB
 #include <Nazara/Core/ThreadSafety.hpp>
 #else
 #include <Nazara/Core/ThreadSafetyOff.hpp>
 #endif
 
+using NzDynLibFunc =  int (*)(); // Type "générique" de pointeur sur fonction
+
 class NzDynLibImpl;
-typedef int (*NzDynLibFunc)(); // Type "générique" de pointeur sur fonction
 
 class NzDynLib : NzNonCopyable
 {