diff --git a/src/binary_formats.ml b/src/binary_formats.ml
index f199ddcb..9a17ee57 100644
--- a/src/binary_formats.ml
+++ b/src/binary_formats.ml
@@ -458,7 +458,7 @@ module SigningKeyAnnouncementPS = struct
     |> sealr
 end
 
-(* --- BIN IMPL END --- *)
+(* ### BIN IMPL END ### *)
 
 module SingleWithdrawRequestPS = struct
   (* purpose.purpose = TALER_SIGNATURE_WALLET_RESERVE_WITHDRAW *)