diff --git a/common_task.py b/common_task.py
index e65c93a..bdc668c 100644
--- a/common_task.py
+++ b/common_task.py
@@ -43,7 +43,7 @@ def read_s3_file(filenameInS3):
     # # Print or process the file contents
     # print(file_content.decode('utf-8'))  # Assumes the file is text; adjust accordingly
 
-def do_the_difference(today_file, last_file, column_for_diff, fresh_output, expired_output, common_output=None, gi):
+def do_the_difference(today_file, last_file, column_for_diff, fresh_output, expired_output, common_output, gi):
     today_df = pd.read_csv(today_file)
     last_file_df = pd.read_csv(last_file)
     print(today_df.shape, last_file_df.shape)