diff --git a/include/taler_config_type.ml b/include/taler_config_type.ml
index 117c0548..925e08b9 100644
--- a/include/taler_config_type.ml
+++ b/include/taler_config_type.ml
@@ -129,7 +129,7 @@ module type Coin = sig
   val fee_deposit : amount
   val fee_refresh : amount
   val fee_refund : amount
-  val cipher : [ `CS | `RSA ]
+  val cipher : [ (* `CS |*) `RSA ]
   val rsa_keysize : int option (*only if `RSA *)
   val age_restricted : [ (*`YES|*) `NO ]
 end