diff --git a/src/pEp.yml2 b/src/pEp.yml2
index f57bc78..08f2355 100644
--- a/src/pEp.yml2
+++ b/src/pEp.yml2
@@ -125,6 +125,7 @@ namespace pEp {
         pEp_decrypt_flag_own_private_key > 1
         PEP_decrypt_flag_consumed > 2
         PEP_decrypt_flag_ignored > 4
+        PEP_decrypt_flag_src_modified > 8
     };
 
     enum IdentityFlags {