diff --git a/src/lib/exchange_api_csr.c b/src/lib/exchange_api_csr.c
index 9493ac04b..968f13adf 100644
--- a/src/lib/exchange_api_csr.c
+++ b/src/lib/exchange_api_csr.c
@@ -114,6 +114,7 @@ csr_ok (struct TALER_EXCHANGE_CsRHandle *csrh,
       GNUNET_JSON_spec_end ()
     };
 
+    alg_values[i].cipher = TALER_DENOMINATION_CS;
     if (GNUNET_OK !=
         GNUNET_JSON_parse (av,
                            spec,