1 files changed, 1 insertions, 1 deletions
diff --git a/include/md4.h b/include/md4.h
index 03ba9b4d7..4bb5e3903 100644
--- a/include/md4.h
+++ b/include/md4.h
@@ -13,7 +13,7 @@ namespace Botan {
 /*************************************************
 * MD4                                            *
 *************************************************/
-class MD4 : public MDx_HashFunction
+class BOTAN_DLL MD4 : public MDx_HashFunction
    {
    public:
       void clear() throw();