diff --git a/tensorflow/python/keras/layers/preprocessing/table_utils.py b/tensorflow/python/keras/layers/preprocessing/table_utils.py
index 88e9d95e2ed..f5397da1f3e 100644
--- a/tensorflow/python/keras/layers/preprocessing/table_utils.py
+++ b/tensorflow/python/keras/layers/preprocessing/table_utils.py
@@ -144,7 +144,7 @@ def get_vocabulary_from_file(vocabulary_path, encoding="utf-8"):
   vocab = []
   with gfile.GFile(vocabulary_path, "r") as reader:
     while True:
-      # Get the next line, and break if it is None.
+      # Get the next line (incl. \n), and break if nothing is left to read.
       text = reader.readline()
       if not text:
         break
diff --git a/tensorflow/python/lib/io/file_io.py b/tensorflow/python/lib/io/file_io.py
index a1db2fb056c..7c484c825d3 100644
--- a/tensorflow/python/lib/io/file_io.py
+++ b/tensorflow/python/lib/io/file_io.py
@@ -165,7 +165,7 @@ class FileIO(object):
     self._read_buf.seek(offset)
 
   def readline(self):
-    r"""Reads the next line from the file. Leaves the '\n' at the end."""
+    r"""Reads the next line, keeping \n. At EOF, returns ''."""
     self._preread_check()
     return self._prepare_value(self._read_buf.readline())