diff --git a/Contrib/Math/Source/Math.c b/Contrib/Math/Source/Math.c
index 2dda69af..da39dedc 100644
--- a/Contrib/Math/Source/Math.c
+++ b/Contrib/Math/Source/Math.c
@@ -1554,7 +1554,7 @@ void CleanAll(int init)
   }
 }
 
-BOOL WINAPI DllMain(HINSTANCE hInst, ULONG ul_reason_for_call, LPVOID lpReserved)
+extern "C" BOOL WINAPI DllMain(HINSTANCE hInst, ULONG ul_reason_for_call, LPVOID lpReserved)
 {
     g_hInstance = hInst;
     CleanAll(ul_reason_for_call == DLL_PROCESS_ATTACH);