diff --git a/youtube_dl/extractor/xfileshare.py b/youtube_dl/extractor/xfileshare.py
index 78e8d8fb4..31dfd53c0 100644
--- a/youtube_dl/extractor/xfileshare.py
+++ b/youtube_dl/extractor/xfileshare.py
@@ -162,7 +162,7 @@ class XFileShareIE(InfoExtractor):
         if not formats:
             urls = []
             for regex in (
-                    r'(?:file|src)\s*:\s*(["\']|(?:\\\'))(?P<url>http(?:(?!\1).)+\.(?:m3u8|mp4|flv)(?:(?!\1).)*)\1',
+                    r'(?:file|src)\s*:\s*(["\']|\\\')(?P<url>http(?:(?!\1).)+\.(?:m3u8|mp4|flv)(?:(?!\1).)*)\1',
                     r'file_link\s*=\s*(["\'])(?P<url>http(?:(?!\1).)+)\1',
                     r'addVariable\((\\?["\'])file\1\s*,\s*(\\?["\'])(?P<url>http(?:(?!\2).)+)\2\)',
                     r'<embed[^>]+src=(["\'])(?P<url>http(?:(?!\1).)+\.(?:m3u8|mp4|flv)(?:(?!\1).)*)\1'):