diff --git a/.gitignore b/.gitignore
index 980923d..6446ac4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,4 +4,3 @@
 /args/param.json
 /args/keys*.json
 *test*
-args/app-config.json
diff --git a/src/request.js b/src/request.js
index bdce801..424ccfb 100644
--- a/src/request.js
+++ b/src/request.js
@@ -325,7 +325,7 @@ function GetRates(req, res) {
             rates = market.rates;
         if (asset) {
             if (asset in rates)
-                res.send(rates[asset]);
+                res.send(rates[asset].toString());
             else
                 res.status(INVALID.e_code).send("Invalid asset parameter");
         } else