diff --git a/hts/util/DataDownloader.py b/hts/util/DataDownloader.py
index bc5038e..396cfd5 100644
--- a/hts/util/DataDownloader.py
+++ b/hts/util/DataDownloader.py
@@ -78,7 +78,7 @@ if __name__ == "__main__":
             print(given_day, "m", count_m)
 
         if zero_count_S < 10:
-            count_S = dataDownloader.writeStockData(stock_code, given_day.strftime('%Y%m%d'), 'm', RESOURCE_DIR)
+            count_S = dataDownloader.writeStockData(stock_code, given_day.strftime('%Y%m%d'), 'S', RESOURCE_DIR)
             if count_S == 0:
                 zero_count_S += 1
             else: