diff --git a/README.md b/README.md
index c1647206..f834d47c 100644
--- a/README.md
+++ b/README.md
@@ -192,7 +192,7 @@ Quick Start
 Change Logs
 -----------
 
-1.2.17 1018/11/24
+1.2.17 2018/11/24
 ======
 
 - Pro版增加期货数据
diff --git a/tushare/stock/classifying.py b/tushare/stock/classifying.py
index 34cdbdb2..a51e1375 100644
--- a/tushare/stock/classifying.py
+++ b/tushare/stock/classifying.py
@@ -263,7 +263,7 @@ def get_sz50s():
     """
     try:
         df = pd.read_excel(ct.SZ_CLASSIFY_URL_FTP%(ct.P_TYPE['http'], ct.DOMAINS['idx'], 
-                                                  ct.PAGES['sz50b']), parse_cols=[0, 4, 5])
+                                                  ct.PAGES['sz50b']), usecols=[0, 4, 5])
         df.columns = ct.FOR_CLASSIFY_B_COLS
         df['code'] = df['code'].map(lambda x :str(x).zfill(6))
         return df