diff --git a/test/test_youtube_signature.py b/test/test_youtube_signature.py
index 2c06caef4..36533cf1f 100644
--- a/test/test_youtube_signature.py
+++ b/test/test_youtube_signature.py
@@ -30,7 +30,7 @@ _TESTS = [
         u'https://s.ytimg.com/yts/swfbin/watch_as3-vflg5GhxU.swf',
         u'swf',
         82,
-        u'23456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ!?#$%&\'()*+,-./:;<=>"'
+        u':/.-,+*)=\'&%$#"!ZYX0VUTSRQPONMLKJIHGFEDCBAzyxw>utsrqponmlkjihgfedcba987654321'
     ),
 ]
 
diff --git a/youtube_dl/extractor/youtube.py b/youtube_dl/extractor/youtube.py
index b57693ee6..45b593a12 100644
--- a/youtube_dl/extractor/youtube.py
+++ b/youtube_dl/extractor/youtube.py
@@ -857,7 +857,6 @@ class YoutubeIE(YoutubeBaseInfoExtractor, SubtitlesInfoExtractor):
             m = methods[func_name]
 
             def resfunc(args):
-                print('Entering function %s(%r)' % (func_name, args))
                 registers = ['(this)'] + list(args) + [None] * m.local_count
                 stack = []
                 coder = io.BytesIO(m.code)