diff --git a/youtube_dl/extractor/animeondemand.py b/youtube_dl/extractor/animeondemand.py
index 69d3633115..34c2b363ea 100644
--- a/youtube_dl/extractor/animeondemand.py
+++ b/youtube_dl/extractor/animeondemand.py
@@ -78,7 +78,7 @@ def _login(self):
             post_url = urljoin(self._LOGIN_URL, post_url)
 
         response = self._download_webpage(
-            post_url, None, 'Logging in as %s' % username,
+            post_url, None, 'Logging in',
             data=urlencode_postdata(login_form), headers={
                 'Referer': self._LOGIN_URL,
             })
diff --git a/youtube_dl/extractor/atresplayer.py b/youtube_dl/extractor/atresplayer.py
index 01fa308ff1..1a31ebe082 100644
--- a/youtube_dl/extractor/atresplayer.py
+++ b/youtube_dl/extractor/atresplayer.py
@@ -87,7 +87,7 @@ def _login(self):
             self._LOGIN_URL, urlencode_postdata(login_form))
         request.add_header('Content-Type', 'application/x-www-form-urlencoded')
         response = self._download_webpage(
-            request, None, 'Logging in as %s' % username)
+            request, None, 'Logging in')
 
         error = self._html_search_regex(
             r'(?s)<ul[^>]+class="[^"]*\blist_error\b[^"]*">(.+?)</ul>',
diff --git a/youtube_dl/extractor/bambuser.py b/youtube_dl/extractor/bambuser.py
index 0eb1930c2d..633c57553d 100644
--- a/youtube_dl/extractor/bambuser.py
+++ b/youtube_dl/extractor/bambuser.py
@@ -59,7 +59,7 @@ def _login(self):
             self._LOGIN_URL, urlencode_postdata(login_form))
         request.add_header('Referer', self._LOGIN_URL)
         response = self._download_webpage(
-            request, None, 'Logging in as %s' % username)
+            request, None, 'Logging in')
 
         login_error = self._html_search_regex(
             r'(?s)<div class="messages error">(.+?)</div>',
diff --git a/youtube_dl/extractor/dramafever.py b/youtube_dl/extractor/dramafever.py
index 95883a037f..6b60e542b3 100644
--- a/youtube_dl/extractor/dramafever.py
+++ b/youtube_dl/extractor/dramafever.py
@@ -54,7 +54,7 @@ def _login(self):
         request = sanitized_Request(
             self._LOGIN_URL, urlencode_postdata(login_form))
         response = self._download_webpage(
-            request, None, 'Logging in as %s' % username)
+            request, None, 'Logging in')
 
         if all(logout_pattern not in response
                for logout_pattern in ['href="/accounts/logout/"', '>Log out<']):
diff --git a/youtube_dl/extractor/funimation.py b/youtube_dl/extractor/funimation.py
index 8c37509ec6..107f658baf 100644
--- a/youtube_dl/extractor/funimation.py
+++ b/youtube_dl/extractor/funimation.py
@@ -57,7 +57,7 @@ def _login(self):
         try:
             data = self._download_json(
                 'https://prod-api-funimationnow.dadcdigital.com/api/auth/login/',
-                None, 'Logging in as %s' % username, data=urlencode_postdata({
+                None, 'Logging in', data=urlencode_postdata({
                     'username': username,
                     'password': password,
                 }))
diff --git a/youtube_dl/extractor/noco.py b/youtube_dl/extractor/noco.py
index 8b83e1f760..a9f9b10c47 100644
--- a/youtube_dl/extractor/noco.py
+++ b/youtube_dl/extractor/noco.py
@@ -70,7 +70,7 @@ def _login(self):
             return
 
         login = self._download_json(
-            self._LOGIN_URL, None, 'Logging in as %s' % username,
+            self._LOGIN_URL, None, 'Logging in',
             data=urlencode_postdata({
                 'a': 'login',
                 'cookie': '1',
diff --git a/youtube_dl/extractor/patreon.py b/youtube_dl/extractor/patreon.py
index a6a2c273f2..d4b1d34ca8 100644
--- a/youtube_dl/extractor/patreon.py
+++ b/youtube_dl/extractor/patreon.py
@@ -67,7 +67,7 @@ def _login(self):
             'https://www.patreon.com/processLogin',
             compat_urllib_parse_urlencode(login_form).encode('utf-8')
         )
-        login_page = self._download_webpage(request, None, note='Logging in as %s' % username)
+        login_page = self._download_webpage(request, None, note='Logging in')
 
         if re.search(r'onLoginFailed', login_page):
             raise ExtractorError('Unable to login, incorrect username and/or password', expected=True)
diff --git a/youtube_dl/extractor/pluralsight.py b/youtube_dl/extractor/pluralsight.py
index f6a9131b19..4bf0aa786a 100644
--- a/youtube_dl/extractor/pluralsight.py
+++ b/youtube_dl/extractor/pluralsight.py
@@ -116,7 +116,7 @@ def _login(self):
             post_url = compat_urlparse.urljoin(self._LOGIN_URL, post_url)
 
         response = self._download_webpage(
-            post_url, None, 'Logging in as %s' % username,
+            post_url, None, 'Logging in',
             data=urlencode_postdata(login_form),
             headers={'Content-Type': 'application/x-www-form-urlencoded'})
 
diff --git a/youtube_dl/extractor/roosterteeth.py b/youtube_dl/extractor/roosterteeth.py
index 46dfc78f5e..8b703800ec 100644
--- a/youtube_dl/extractor/roosterteeth.py
+++ b/youtube_dl/extractor/roosterteeth.py
@@ -68,7 +68,7 @@ def _login(self):
 
         login_request = self._download_webpage(
             self._LOGIN_URL, None,
-            note='Logging in as %s' % username,
+            note='Logging in',
             data=urlencode_postdata(login_form),
             headers={
                 'Referer': self._LOGIN_URL,
diff --git a/youtube_dl/extractor/safari.py b/youtube_dl/extractor/safari.py
index 909a6ba979..cc6698f882 100644
--- a/youtube_dl/extractor/safari.py
+++ b/youtube_dl/extractor/safari.py
@@ -61,7 +61,7 @@ def is_logged(webpage):
         request = sanitized_Request(
             self._LOGIN_URL, urlencode_postdata(login_form), headers=headers)
         login_page = self._download_webpage(
-            request, None, 'Logging in as %s' % username)
+            request, None, 'Logging in')
 
         if not is_logged(login_page):
             raise ExtractorError(
diff --git a/youtube_dl/extractor/twitch.py b/youtube_dl/extractor/twitch.py
index fefcd28078..bf57eac01f 100644
--- a/youtube_dl/extractor/twitch.py
+++ b/youtube_dl/extractor/twitch.py
@@ -101,7 +101,7 @@ def login_step(page, urlh, note, data):
             fail(clean_html(login_page))
 
         redirect_page, handle = login_step(
-            login_page, handle, 'Logging in as %s' % username, {
+            login_page, handle, 'Logging in', {
                 'username': username,
                 'password': password,
             })
diff --git a/youtube_dl/extractor/udemy.py b/youtube_dl/extractor/udemy.py
index 207c4a6a7e..c248ea7278 100644
--- a/youtube_dl/extractor/udemy.py
+++ b/youtube_dl/extractor/udemy.py
@@ -164,7 +164,7 @@ def is_logged(webpage):
         })
 
         response = self._download_webpage(
-            self._LOGIN_URL, None, 'Logging in as %s' % username,
+            self._LOGIN_URL, None, 'Logging in',
             data=urlencode_postdata(login_form),
             headers={
                 'Referer': self._ORIGIN_URL,
diff --git a/youtube_dl/extractor/viki.py b/youtube_dl/extractor/viki.py
index 853e5c75f4..ad2a2a4b70 100644
--- a/youtube_dl/extractor/viki.py
+++ b/youtube_dl/extractor/viki.py
@@ -99,7 +99,7 @@ def _login(self):
 
         login = self._call_api(
             'sessions.json', None,
-            'Logging in as %s' % username, post_data=login_form)
+            'Logging in', post_data=login_form)
 
         self._token = login.get('token')
         if not self._token:
diff --git a/youtube_dl/extractor/vk.py b/youtube_dl/extractor/vk.py
index 105e172d53..0d8376522d 100644
--- a/youtube_dl/extractor/vk.py
+++ b/youtube_dl/extractor/vk.py
@@ -67,7 +67,7 @@ def _login(self):
 
         login_page = self._download_webpage(
             'https://login.vk.com/?act=login', None,
-            note='Logging in as %s' % username,
+            note='Logging in',
             data=urlencode_postdata(login_form))
 
         if re.search(r'onLoginFailed', login_page):