diff --git a/hts/HTS.py b/hts/HTS.py
index 952a1c6..eef39e0 100644
--- a/hts/HTS.py
+++ b/hts/HTS.py
@@ -733,7 +733,7 @@ class HTS:
         size = len(data["Close"])
         STOCK = []
         for i in range(size):
-            STOCK.append({'volume': data['Volume'], 'close': data["Close"][i], 'open': data["Open"][i], 'high': data["High"][i], 'low': data["Low"][i], 'avg5': data["avg5"][i], 'avg20': data["avg20"][i], 'avg60': data["avg60"][i], 'avg120': data["avg120"][i]})
+            STOCK.append({'volume': data['Volume'][i], 'close': data["Close"][i], 'open': data["Open"][i], 'high': data["High"][i], 'low': data["Low"][i], 'avg5': data["avg5"][i], 'avg20': data["avg20"][i], 'avg60': data["avg60"][i], 'avg120': data["avg120"][i]})
 
         bsLine = {}
         bsLine['buy']  = [-1 for i in range(size)]