diff --git a/src/benchmark/taler-exchange-benchmark.c b/src/benchmark/taler-exchange-benchmark.c
index d9c0a3f1c..939fc58ec 100644
--- a/src/benchmark/taler-exchange-benchmark.c
+++ b/src/benchmark/taler-exchange-benchmark.c
@@ -77,6 +77,12 @@ struct Coin {
    */
   const struct TALER_EXCHANGE_DenomPublicKey *pk;
 
+  /**
+   * Array of denomination keys needed in case this coin is to be
+   * refreshed
+   */
+  const struct TALER_EXCHANGE_DenomPublicKey **refresh_pk;
+
   /**
    * Set (by the interpreter) to the exchange's signature over the
    * coin's public key.
@@ -187,7 +193,7 @@ static struct TALER_MerchantPrivateKeyP merchant_priv;
  * Used currency (to be preferably gotten via config file, together
  * exchange URI and other needed values)
  */
-#define CURRENCY "KUDOS"
+#define CURRENCY "PUDOS"
 
 
 /**
@@ -649,6 +655,10 @@ do_shutdown (void *cls)
       TALER_EXCHANGE_refresh_reveal_cancel(coins[i].rrh);
       coins[i].rmh = NULL;    
     }
+    if (NULL != coins[i].refresh_pk)
+    {
+      GNUNET_free (coins[i].refresh_pk);
+    }
 
   }