From c72e9c3ceff827caf95a7ea6a1a15027a650147a Mon Sep 17 00:00:00 2001
From: Jean-Baptiste LE STANG <jb.lestang@gmail.com>
Date: Tue, 2 Jan 2018 11:00:22 +0100
Subject: [PATCH] force refresh is the value has never been set

---
 freqtrade/exchange/bittrex.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/freqtrade/exchange/bittrex.py b/freqtrade/exchange/bittrex.py
index c153091d0..c1ea0608f 100644
--- a/freqtrade/exchange/bittrex.py
+++ b/freqtrade/exchange/bittrex.py
@@ -98,7 +98,7 @@ class Bittrex(Exchange):
 
     def get_ticker(self, pair: str, refresh: Optional[bool] = True) -> dict:
         data = _API.get_ticker(pair.replace('_', '-'), refresh)
-        if refresh:
+        if refresh or pair not in self.cached_ticker.keys():
             if not data['success']:
                 Bittrex._validate_response(data)
                 raise OperationalException('{message} params=({pair})'.format(