diff --git a/main/extra_func.py b/main/extra_func.py
index b601a03..0224e01 100644
--- a/main/extra_func.py
+++ b/main/extra_func.py
@@ -381,7 +381,6 @@ class StatisticData:
         first_log, last_log = self.data[0], self.data[len(self.data) - 1]
 
         if first_log.old_role == ROLES['engineer']:
-            self.fill_daterange(self.start_date, first_log.change_time.date())
             self.statistic[first_log.change_time.date()] += get_timedelta(first_log).total_seconds()
 
         if last_log.new_role == ROLES['engineer']: