diff --git a/yt_dlp/extractor/_extractors.py b/yt_dlp/extractor/_extractors.py
index cf6744487..b4d50e52b 100644
--- a/yt_dlp/extractor/_extractors.py
+++ b/yt_dlp/extractor/_extractors.py
@@ -2019,7 +2019,6 @@ from .thestar import TheStarIE
 from .thesun import TheSunIE
 from .theweatherchannel import TheWeatherChannelIE
 from .thisamericanlife import ThisAmericanLifeIE
-from .thisav import ThisAVIE
 from .thisoldhouse import ThisOldHouseIE
 from .thisvid import (
     ThisVidIE,
diff --git a/yt_dlp/extractor/thisav.py b/yt_dlp/extractor/thisav.py
deleted file mode 100644
index b1cd57d1f..000000000
--- a/yt_dlp/extractor/thisav.py
+++ /dev/null
@@ -1,66 +0,0 @@
-from .common import InfoExtractor
-from ..utils import remove_end
-
-
-class ThisAVIE(InfoExtractor):
-    _VALID_URL = r'https?://(?:www\.)?thisav\.com/video/(?P<id>[0-9]+)/.*'
-    _TESTS = [{
-        # jwplayer
-        'url': 'http://www.thisav.com/video/47734/%98%26sup1%3B%83%9E%83%82---just-fit.html',
-        'md5': '0480f1ef3932d901f0e0e719f188f19b',
-        'info_dict': {
-            'id': '47734',
-            'ext': 'flv',
-            'title': '高樹マリア - Just fit',
-            'uploader': 'dj7970',
-            'uploader_id': 'dj7970'
-        }
-    }, {
-        # html5 media
-        'url': 'http://www.thisav.com/video/242352/nerdy-18yo-big-ass-tattoos-and-glasses.html',
-        'md5': 'ba90c076bd0f80203679e5b60bf523ee',
-        'info_dict': {
-            'id': '242352',
-            'ext': 'mp4',
-            'title': 'Nerdy 18yo Big Ass Tattoos and Glasses',
-            'uploader': 'cybersluts',
-            'uploader_id': 'cybersluts',
-        },
-    }]
-
-    def _real_extract(self, url):
-        mobj = self._match_valid_url(url)
-
-        video_id = mobj.group('id')
-        webpage = self._download_webpage(url, video_id)
-        title = remove_end(self._html_extract_title(webpage), ' - 視頻 - ThisAV.com-世界第一中文成人娛樂網站')
-        video_url = self._html_search_regex(
-            r"addVariable\('file','([^']+)'\);", webpage, 'video url', default=None)
-        if video_url:
-            info_dict = {
-                'formats': [{
-                    'url': video_url,
-                }],
-            }
-        else:
-            entries = self._parse_html5_media_entries(url, webpage, video_id)
-            if entries:
-                info_dict = entries[0]
-            else:
-                info_dict = self._extract_jwplayer_data(
-                    webpage, video_id, require_title=False)
-        uploader = self._html_search_regex(
-            r': <a href="http://www\.thisav\.com/user/[0-9]+/(?:[^"]+)">([^<]+)</a>',
-            webpage, 'uploader name', fatal=False)
-        uploader_id = self._html_search_regex(
-            r': <a href="http://www\.thisav\.com/user/[0-9]+/([^"]+)">(?:[^<]+)</a>',
-            webpage, 'uploader id', fatal=False)
-
-        info_dict.update({
-            'id': video_id,
-            'uploader': uploader,
-            'uploader_id': uploader_id,
-            'title': title,
-        })
-
-        return info_dict
diff --git a/yt_dlp/extractor/unsupported.py b/yt_dlp/extractor/unsupported.py
index bbcbf3acb..d610baecb 100644
--- a/yt_dlp/extractor/unsupported.py
+++ b/yt_dlp/extractor/unsupported.py
@@ -164,11 +164,15 @@ class KnownPiracyIE(UnsupportedInfoExtractor):
         r'viewsb\.com',
         r'filemoon\.sx',
         r'hentai\.animestigma\.com',
+        r'thisav\.com',
     )
 
     _TESTS = [{
         'url': 'http://dood.to/e/5s1wmbdacezb',
         'only_matching': True,
+    }, {
+        'url': 'https://thisav.com/en/terms',
+        'only_matching': True,
     }]
 
     def _real_extract(self, url):