diff --git a/sohstationviewer/model/reftek_data/log_info.py b/sohstationviewer/model/reftek_data/log_info.py
index 1ba6f822e5f75175e3fab4a4e63114b6e4753eb7..486efcb069cedebd70ce136d9f5bb2bdcb9d1b98 100644
--- a/sohstationviewer/model/reftek_data/log_info.py
+++ b/sohstationviewer/model/reftek_data/log_info.py
@@ -6,7 +6,7 @@ from sohstationviewer.controller.util import (
     get_time_6, get_time_4, get_val, rtn_pattern)
 from sohstationviewer.view.util.enums import LogType
 from sohstationviewer.model.reftek_data.log_info_helper import (
-    remove_question_mark)
+    remove_question_marks)
 
 if TYPE_CHECKING:
     from sohstationviewer.model.reftek_data.reftek import RT130
@@ -35,7 +35,7 @@ class LogInfo():
         self.key = key
         self.unit_id, self.exp_no = key
         self.req_data_streams = req_data_streams
-        self.no_question_req_soh_chans = remove_question_mark(req_soh_chans)
+        self.no_question_req_soh_chans = remove_question_marks(req_soh_chans)
         self.is_log_file = is_log_file
         """
         track_year to add year to time since year time not include year after
diff --git a/sohstationviewer/model/reftek_data/log_info_helper.py b/sohstationviewer/model/reftek_data/log_info_helper.py
index 282ca5cb25e0096fc0d07efc0d7bc90e61587028..3c3180ed08ab37f48b8d614f909141a5c75c956b 100644
--- a/sohstationviewer/model/reftek_data/log_info_helper.py
+++ b/sohstationviewer/model/reftek_data/log_info_helper.py
@@ -1,8 +1,14 @@
-def remove_question_mark(req_soh_chan):
+def remove_question_marks(req_soh_chan):
+    """
+    Remove the question marks in the channel request list, req_soh_chan
+    :param req_soh_chan: soh channel request list
+    :return no_question_req_soh_chan: the channel request list with the
+        question marks removed
+    """
     no_question_req_soh_chan = []
     for idx, req in enumerate(req_soh_chan):
         if req.endswith('?'):
             no_question_req_soh_chan.append(req_soh_chan[idx][:-1])
         else:
             no_question_req_soh_chan.append(req_soh_chan[idx])
-    return no_question_req_soh_chan
\ No newline at end of file
+    return no_question_req_soh_chan