diff --git a/src/exchange/taler-exchange-httpd_purses_create.c b/src/exchange/taler-exchange-httpd_purses_create.c
index ef1189530..acd9bcc55 100644
--- a/src/exchange/taler-exchange-httpd_purses_create.c
+++ b/src/exchange/taler-exchange-httpd_purses_create.c
@@ -492,7 +492,7 @@ parse_coin (struct MHD_Connection *connection,
   if (GNUNET_OK !=
       TALER_wallet_purse_deposit_verify (TEH_base_url,
                                          pcc->purse_pub,
-                                         &pcc->amount,
+                                         &coin->amount,
                                          &coin->cpi.coin_pub,
                                          &coin->coin_sig))
   {
diff --git a/src/exchange/taler-exchange-httpd_purses_merge.c b/src/exchange/taler-exchange-httpd_purses_merge.c
index ee8a73756..e79c41d85 100644
--- a/src/exchange/taler-exchange-httpd_purses_merge.c
+++ b/src/exchange/taler-exchange-httpd_purses_merge.c
@@ -134,7 +134,7 @@ reply_merge_success (struct MHD_Connection *connection,
   enum TALER_ErrorCode ec;
   struct TALER_Amount merge_amount;
 
-  if (0 <=
+  if (0 <
       TALER_amount_cmp (&pcc->balance,
                         &pcc->target_amount))
   {
@@ -144,8 +144,9 @@ reply_merge_success (struct MHD_Connection *connection,
       TALER_JSON_pack_amount ("balance",
                               &pcc->balance));
   }
-  if (0 == strcmp (pcc->provider_url,
-                   TEH_base_url))
+  if ( (NULL == pcc->provider_url) ||
+       (0 == strcmp (pcc->provider_url,
+                     TEH_base_url)) )
   {
     /* wad fee is always zero if we stay at our own exchange */
     merge_amount = pcc->target_amount;
@@ -175,7 +176,9 @@ reply_merge_success (struct MHD_Connection *connection,
          pcc->purse_pub,
          &pcc->h_contract_terms,
          &pcc->reserve_pub,
-         pcc->provider_url,
+         (NULL != pcc->provider_url)
+         ? pcc->provider_url
+         : TEH_base_url,
          &pub,
          &sig)))
   {
diff --git a/src/lib/exchange_api_purse_merge.c b/src/lib/exchange_api_purse_merge.c
index 2dc9e4ca0..d30d5da26 100644
--- a/src/lib/exchange_api_purse_merge.c
+++ b/src/lib/exchange_api_purse_merge.c
@@ -142,7 +142,7 @@ handle_purse_merge_finished (void *cls,
                                      &exchange_pub),
         GNUNET_JSON_spec_timestamp ("exchange_timestamp",
                                     &etime),
-        TALER_JSON_spec_amount ("total_deposited",
+        TALER_JSON_spec_amount ("merge_amount",
                                 pch->purse_value_after_fees.currency,
                                 &total_deposited),
         GNUNET_JSON_spec_end ()