diff --git a/src/icartt/dataset.py b/src/icartt/dataset.py
index 5741810de56d003b360e48569554897b5c8a192c..aa0dd1e4a152848e1f5503bd627cae71bbe10488 100644
--- a/src/icartt/dataset.py
+++ b/src/icartt/dataset.py
@@ -695,7 +695,7 @@ class Dataset:
     def read(self, splitChar=","):
         """Read ICARTT data and header"""
         self.readHeader(splitChar)
-        self.endDefineMode(splitChar)
+        self.endDefineMode(splitChar) # TODO: endDefineMode does not take arg splitChar
         self.readData(splitChar)
 
     def makeFileName(self, dateFormat="%Y%m%d"):