diff --git a/youtube_transcript_api/_api.py b/youtube_transcript_api/_api.py
index c5e835d..99f7d53 100644
--- a/youtube_transcript_api/_api.py
+++ b/youtube_transcript_api/_api.py
@@ -61,6 +61,8 @@ class YouTubeTranscriptApi(object):
         :type proxies: {'http': str, 'https': str} - http://docs.python-requests.org/en/master/user/advanced/#proxies
         :param cookies: a string of the path to a text file containing youtube authorization cookies
         :type cookies: str
+        :param preserve_formatting: whether to keep select HTML text formatting
+        :type preserve_formatting: bool
         :return: the list of available transcripts
         :rtype TranscriptList:
         """
@@ -126,6 +128,8 @@ class YouTubeTranscriptApi(object):
         :type proxies: {'http': str, 'https': str} - http://docs.python-requests.org/en/master/user/advanced/#proxies
         :param cookies: a string of the path to a text file containing youtube authorization cookies
         :type cookies: str
+        :param preserve_formatting: whether to keep select HTML text formatting
+        :type preserve_formatting: bool
         :return: a list of dictionaries containing the 'text', 'start' and 'duration' keys
         :rtype [{'text': str, 'start': float, 'end': float}]:
         """
diff --git a/youtube_transcript_api/_transcripts.py b/youtube_transcript_api/_transcripts.py
index a1b2b5c..59d2f4c 100644
--- a/youtube_transcript_api/_transcripts.py
+++ b/youtube_transcript_api/_transcripts.py
@@ -137,6 +137,8 @@ class TranscriptList(object):
         :type video_id: str
         :param captions_json: the JSON parsed from the YouTube pages static HTML
         :type captions_json: dict
+        :param preserve_formatting: whether to keep select HTML text formatting
+        :type preserve_formatting: bool
         :return: the created TranscriptList
         :rtype TranscriptList:
         """
@@ -279,7 +281,8 @@ class Transcript(object):
         :param language_code:
         :param is_generated:
         :param translation_languages:
-        :param preserve_formatting: whether to keep select HTMl text formatting
+        :param preserve_formatting: whether to keep select HTML text formatting
+        :type preserve_formatting: bool
         """
         self._http_client = http_client
         self.video_id = video_id