diff --git a/crypto/dh/dh.h b/crypto/dh/dh.h
index 8d60ae5c52f201c67648f9f2e067e7380a46b802..5431725b8da1ba98fea4f4702357d4eb1c09f9ab 100644
--- a/crypto/dh/dh.h
+++ b/crypto/dh/dh.h
@@ -63,10 +63,8 @@
 extern "C" {
 #endif
 
-#ifndef HEADER_BN_H
-#define BIGNUM 		char
-#endif
-
+#include "bn.h"
+	
 #define DH_FLAG_CACHE_MONT_P	0x01
 
 typedef struct dh_st