diff --git a/kerberos5/include/crypto-headers.h b/kerberos5/include/crypto-headers.h
index dc3c9c36de5..b224364140f 100644
--- a/kerberos5/include/crypto-headers.h
+++ b/kerberos5/include/crypto-headers.h
@@ -1,6 +1,7 @@
 /* $FreeBSD$ */
 #ifndef __crypto_headers_h__
 #define __crypto_headers_h__
+#define OPENSSL_DES_LIBDES_COMPATIBILITY
 #include <openssl/des.h>
 #include <openssl/rc4.h>
 #include <openssl/md4.h>