1 files changed, 4 insertions, 0 deletions
diff --git a/g10/encode.c b/g10/encode.c
index 66ce57c35..8a64c7633 100644
--- a/g10/encode.c
+++ b/g10/encode.c
@@ -107,6 +107,10 @@ encode_sesskey( DEK *dek, DEK **ret_dek, byte *enckey )
 static int
 use_mdc(PK_LIST pk_list,int algo)
 {
+  /* RFC-1991 and 2440 don't have MDC */
+  if(RFC1991 || RFC2440)
+    return 0;
+
   /* --force-mdc overrides --disable-mdc */
   if(opt.force_mdc)
     return 1;