diff --git a/src/pEp.yml2 b/src/pEp.yml2
index aee3bc5..a3f94e1 100644
--- a/src/pEp.yml2
+++ b/src/pEp.yml2
@@ -163,11 +163,12 @@ namespace pEp {
         method encrypt_message_for_self(
                 in identity target,
                 in message src,
+                in stringlist extra,
                 creates message dst,
                 Cconst PEP_enc_format encformat "PEP_enc_PEP",
                 Cconst PEP_encrypt_flags flags "0"
             );
-        
+
         method decrypt_message(
                 in message src,
                 creates message dst,