diff --git a/daily_report/dreport.py b/daily_report/dreport.py
index 0083365..3b0ee73 100644
--- a/daily_report/dreport.py
+++ b/daily_report/dreport.py
@@ -520,7 +520,7 @@ class TapWeeklyReport:
 
 
     def struct_data(self, data):
-        r_data = list
+        r_data = list()
         for key in self.all_type.keys():
             try:
                 data_key = data.get(key, [])