diff --git a/youtube_dl/extractor/br.py b/youtube_dl/extractor/br.py
index 2256f47bb..5fcc1084a 100644
--- a/youtube_dl/extractor/br.py
+++ b/youtube_dl/extractor/br.py
@@ -4,6 +4,7 @@ from __future__ import unicode_literals
 import re
 
 from .common import InfoExtractor
+from ..utils import ExtractorError
 
 
 class BRIE(InfoExtractor):
diff --git a/youtube_dl/extractor/trutube.py b/youtube_dl/extractor/trutube.py
index 1166836de..57f956683 100644
--- a/youtube_dl/extractor/trutube.py
+++ b/youtube_dl/extractor/trutube.py
@@ -3,9 +3,6 @@ from __future__ import unicode_literals
 import re
 
 from .common import InfoExtractor
-from ..utils import (
-    ExtractorError,
-)
 
 
 class TruTubeIE(InfoExtractor):
diff --git a/youtube_dl/extractor/youtube.py b/youtube_dl/extractor/youtube.py
index e1ef90e38..cf0bd4ae3 100644
--- a/youtube_dl/extractor/youtube.py
+++ b/youtube_dl/extractor/youtube.py
@@ -29,7 +29,6 @@ from ..utils import (
     ExtractorError,
     int_or_none,
     PagedList,
-    RegexNotFoundError,
     unescapeHTML,
     unified_strdate,
     orderedSet,