1 files changed, 2 insertions, 3 deletions

diff --git a/src/backend/anastasis-httpd_truth.c b/src/backend/anastasis-httpd_truth.c
index 50cd75b..4dd3ddc 100644
--- a/src/backend/anastasis-httpd_truth.c
+++ b/src/backend/anastasis-httpd_truth.c
@@ -76,7 +76,7 @@ struct GetContext
   struct ANASTASIS_CRYPTO_TruthKeyP truth_key;
 
   /**
-   * true if client provided a payment secret / order ID?
+   * Cost for paying the challenge.
    */
   struct TALER_Amount challenge_cost;
 
@@ -1211,8 +1211,7 @@ AH_handler_truth_get (
   if ( (is_question) ||
        (! gc->authorization->payment_plugin_managed) )
   {
-    if ( (0 == gc->challenge_cost.value) &&
-         (0 == gc->challenge_cost.fraction) )
+    if (! TALER_amount_is_zero (&gc->challenge_cost))
     {
       /* Check database to see if the transaction is paid for */
       enum GNUNET_DB_QueryStatus qs;