diff --git a/youtube_dl/extractor/ebaumsworld.py b/youtube_dl/extractor/ebaumsworld.py
index 046976743..63c2549d3 100644
--- a/youtube_dl/extractor/ebaumsworld.py
+++ b/youtube_dl/extractor/ebaumsworld.py
@@ -3,7 +3,6 @@
 import re
 
 from .common import InfoExtractor
-from ..utils import determine_ext
 
 
 class EbaumsWorldIE(InfoExtractor):
@@ -31,7 +30,6 @@ def _real_extract(self, url):
             'id': video_id,
             'title': config.find('title').text,
             'url': video_url,
-            'ext': determine_ext(video_url),
             'description': config.find('description').text,
             'thumbnail': config.find('image').text,
             'uploader': config.find('username').text,