diff --git a/src/exchange/taler-exchange-httpd_responses.c b/src/exchange/taler-exchange-httpd_responses.c
index ab9b81390..33bc13985 100644
--- a/src/exchange/taler-exchange-httpd_responses.c
+++ b/src/exchange/taler-exchange-httpd_responses.c
@@ -704,6 +704,7 @@ TEH_RESPONSE_compile_reserve_history (
   json_t *json_history;
 
   json_history = json_array ();
+  GNUNET_assert (NULL != json_history);
   for (const struct TALER_EXCHANGEDB_ReserveHistory *pos = rh;
        NULL != pos;
        pos = pos->next)
@@ -1012,10 +1013,14 @@ reply_reserve_insufficient_funds (
 
   json_history = TEH_RESPONSE_compile_reserve_history (rh);
   if (NULL == json_history)
+  {
+    GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+                "Failed to compile reserve history\n");
     return TALER_MHD_reply_with_error (connection,
                                        MHD_HTTP_INTERNAL_SERVER_ERROR,
                                        TALER_EC_EXCHANGE_RESERVE_HISTORY_ERROR_INSUFFICIENT_FUNDS,
                                        NULL);
+  }
   return TALER_MHD_REPLY_JSON_PACK (
     connection,
     MHD_HTTP_CONFLICT,
@@ -1061,6 +1066,7 @@ TEH_RESPONSE_reply_reserve_insufficient_balance (
   if ( (qs < 0) ||
        (NULL == rh) )
   {
+    GNUNET_break (0);
     return TALER_MHD_reply_with_error (connection,
                                        MHD_HTTP_INTERNAL_SERVER_ERROR,
                                        TALER_EC_GENERIC_DB_FETCH_FAILED,
diff --git a/src/exchange/taler-exchange-httpd_withdraw.c b/src/exchange/taler-exchange-httpd_withdraw.c
index 253773639..05153bfc4 100644
--- a/src/exchange/taler-exchange-httpd_withdraw.c
+++ b/src/exchange/taler-exchange-httpd_withdraw.c
@@ -215,6 +215,8 @@ withdraw_transaction (void *cls,
   if (! balance_ok)
   {
     TEH_plugin->rollback (TEH_plugin->cls);
+    GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+                "Balance insufficient for /withdraw\n");
     *mhd_ret = TEH_RESPONSE_reply_reserve_insufficient_balance (
       connection,
       TALER_EC_EXCHANGE_WITHDRAW_INSUFFICIENT_FUNDS,
diff --git a/src/exchangedb/exchange_do_reserve_purse.sql b/src/exchangedb/exchange_do_reserve_purse.sql
index 4f65c6606..0476e60d1 100644
--- a/src/exchangedb/exchange_do_reserve_purse.sql
+++ b/src/exchangedb/exchange_do_reserve_purse.sql
@@ -161,7 +161,3 @@ END $$;
 
 COMMENT ON FUNCTION exchange_do_reserve_purse(BYTEA, BYTEA, INT8, INT8, INT8, BYTEA, BOOLEAN, INT8, INT4, BYTEA, BYTEA)
   IS 'Create a purse for a reserve.';
-
-
-
-
diff --git a/src/exchangedb/pg_get_reserve_history.c b/src/exchangedb/pg_get_reserve_history.c
index 89701ae71..6c12abc61 100644
--- a/src/exchangedb/pg_get_reserve_history.c
+++ b/src/exchangedb/pg_get_reserve_history.c
@@ -797,14 +797,14 @@ TEH_PG_get_reserve_history (void *cls,
            " FROM purse_merges pm"
            "   JOIN purse_requests pr"
            "     USING (purse_pub)"
-           "   JOIN purse_decision pdes"
+           "   LEFT JOIN purse_decision pdes"
            "     USING (purse_pub)"
            "   JOIN account_merges am"
            "     ON (am.purse_pub = pm.purse_pub AND"
            "         am.reserve_pub = pm.reserve_pub)"
            " WHERE pm.reserve_pub=$1"
            "  AND COALESCE(pm.partner_serial_id,0)=0" /* must be local! */
-           "  AND NOT pdes.refunded;");
+           "  AND NOT COALESCE (pdes.refunded, FALSE);");
   PREPARE (pg,
            "history_by_reserve",
            "SELECT"
@@ -855,7 +855,12 @@ TEH_PG_get_reserve_history (void *cls,
                                                &rhc);
     if ( (0 > qs) ||
          (GNUNET_OK != rhc.status) )
+    {
+      GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
+                  "Failed to compile reserve history at `%s'\n",
+                  work[i].statement);
       break;
+    }
   }
   if ( (qs < 0) ||
        (rhc.status != GNUNET_OK) )