diff --git a/src/pEp.yml2 b/src/pEp.yml2
index a02f460..4e24db4 100644
--- a/src/pEp.yml2
+++ b/src/pEp.yml2
@@ -108,6 +108,8 @@ namespace pEp {
 
     enum DecryptFlags {
         pEp_decrypt_flag_own_private_key > 1
+        PEP_decrypt_flag_consumed > 2
+        PEP_decrypt_flag_discarded > 4
     };
 
     enum SyncHandshakeResult {