diff --git a/include/make_crypto.c b/include/make_crypto.c
index f3531248a..5ebe6a6da 100644
--- a/include/make_crypto.c
+++ b/include/make_crypto.c
@@ -60,6 +60,7 @@ main(int argc, char **argv)
     fprintf(f, "#ifndef __%s__\n", argv[1]);
     fprintf(f, "#define __%s__\n", argv[1]);
 #ifdef HAVE_OPENSSL
+    fputs("#define OPENSSL_DES_LIBDES_COMPATIBILITY\n", f);
     fputs("#include <openssl/des.h>\n", f);
     fputs("#include <openssl/rc4.h>\n", f);
     fputs("#include <openssl/md4.h>\n", f);