diff --git a/yt_dlp/extractor/iheart.py b/yt_dlp/extractor/iheart.py
index 2c6a5b6a1..fb6f51e2c 100644
--- a/yt_dlp/extractor/iheart.py
+++ b/yt_dlp/extractor/iheart.py
@@ -23,7 +23,7 @@ def _extract_episode(self, episode):
 
 
 class IHeartRadioIE(IHeartRadioBaseIE):
-    IENAME = 'iheartradio'
+    IE_NAME = 'iheartradio'
     _VALID_URL = r'(?:https?://(?:www\.)?iheart\.com/podcast/[^/]+/episode/(?P<display_id>[^/?&#]+)-|iheartradio:)(?P<id>\d+)'
     _TEST = {
         'url': 'https://www.iheart.com/podcast/105-behind-the-bastards-29236323/episode/part-one-alexander-lukashenko-the-dictator-70346499/?embed=true',
diff --git a/yt_dlp/extractor/kinja.py b/yt_dlp/extractor/kinja.py
index a225d0a0d..f4e5c4c47 100644
--- a/yt_dlp/extractor/kinja.py
+++ b/yt_dlp/extractor/kinja.py
@@ -12,7 +12,7 @@
 
 
 class KinjaEmbedIE(InfoExtractor):
-    IENAME = 'kinja:embed'
+    IE_NAME = 'kinja:embed'
     _DOMAIN_REGEX = r'''(?:[^.]+\.)?
         (?:
             avclub|
diff --git a/yt_dlp/extractor/nba.py b/yt_dlp/extractor/nba.py
index d8fc82488..81d11e3a5 100644
--- a/yt_dlp/extractor/nba.py
+++ b/yt_dlp/extractor/nba.py
@@ -97,7 +97,7 @@ def _extract_video(self, filter_key, filter_value):
 
 
 class NBAWatchEmbedIE(NBAWatchBaseIE):
-    IENAME = 'nba:watch:embed'
+    IE_NAME = 'nba:watch:embed'
     _VALID_URL = NBAWatchBaseIE._VALID_URL_BASE + r'embed\?.*?\bid=(?P<id>\d+)'
     _TESTS = [{
         'url': 'http://watch.nba.com/embed?id=659395',
@@ -339,7 +339,7 @@ def _real_extract(self, url):
 
 
 class NBAEmbedIE(NBABaseIE):
-    IENAME = 'nba:embed'
+    IE_NAME = 'nba:embed'
     _VALID_URL = r'https?://secure\.nba\.com/assets/amp/include/video/(?:topI|i)frame\.html\?.*?\bcontentId=(?P<id>[^?#&]+)'
     _TESTS = [{
         'url': 'https://secure.nba.com/assets/amp/include/video/topIframe.html?contentId=teams/bulls/2020/12/04/3478774/1607105587854-20201204_SCHEDULE_RELEASE_FINAL_DRUPAL-3478774&team=bulls&adFree=false&profile=71&videoPlayerName=TAMPCVP&baseUrl=&videoAdsection=nba.com_mobile_web_teamsites_chicagobulls&ampEnv=',
@@ -361,7 +361,7 @@ def _real_extract(self, url):
 
 
 class NBAIE(NBABaseIE):
-    IENAME = 'nba'
+    IE_NAME = 'nba'
     _VALID_URL = NBABaseIE._VALID_URL_BASE + '(?!%s)video/(?P<id>(?:[^/]+/)*[^/?#&]+)' % NBABaseIE._CHANNEL_PATH_REGEX
     _TESTS = [{
         'url': 'https://www.nba.com/bulls/video/teams/bulls/2020/12/04/3478774/1607105587854-20201204schedulereleasefinaldrupal-3478774',
@@ -388,7 +388,7 @@ def _extract_url_results(self, team, content_id):
 
 
 class NBAChannelIE(NBABaseIE):
-    IENAME = 'nba:channel'
+    IE_NAME = 'nba:channel'
     _VALID_URL = NBABaseIE._VALID_URL_BASE + '(?:%s)/(?P<id>[^/?#&]+)' % NBABaseIE._CHANNEL_PATH_REGEX
     _TESTS = [{
         'url': 'https://www.nba.com/blazers/video/channel/summer_league',