diff --git a/lib/btc.js b/lib/btc.js
index d7c06ce..33f27c0 100644
--- a/lib/btc.js
+++ b/lib/btc.js
@@ -23,11 +23,16 @@ exports.doBTC = function (req, res) {
         });
         response.on('end', function () {
           console.log('>> data', data);
+          let cData = {};
           try {
-            callback(JSON.parse(data), r);
-          } catch (e) {
+            cData = JSON.parse(data);
+            }
+          catch (e) {
             console.error(e);
           }
+          finally{
+            callback(cData, r);
+          }
 
         });
         response.on('error', function (e) {