diff --git a/gallery_dl/config.py b/gallery_dl/config.py
index 29d0155f..0b2aca80 100644
--- a/gallery_dl/config.py
+++ b/gallery_dl/config.py
@@ -119,7 +119,7 @@ def clear():
     _config.clear()
 
 
-def get(path, key, default=None, *, conf=_config):
+def get(path, key, default=None, conf=_config):
     """Get the value of property 'key' or a default value"""
     try:
         for p in path:
@@ -129,7 +129,7 @@ def get(path, key, default=None, *, conf=_config):
         return default
 
 
-def interpolate(path, key, default=None, *, conf=_config):
+def interpolate(path, key, default=None, conf=_config):
     """Interpolate the value of 'key'"""
     if key in conf:
         return conf[key]
@@ -143,7 +143,7 @@ def interpolate(path, key, default=None, *, conf=_config):
     return default
 
 
-def interpolate_common(common, paths, key, default=None, *, conf=_config):
+def interpolate_common(common, paths, key, default=None, conf=_config):
     """Interpolate the value of 'key'
     using multiple 'paths' along a 'common' ancestor
     """
@@ -175,7 +175,7 @@ def interpolate_common(common, paths, key, default=None, *, conf=_config):
     return default
 
 
-def accumulate(path, key, *, conf=_config):
+def accumulate(path, key, conf=_config):
     """Accumulate the values of 'key' along 'path'"""
     result = []
     try:
@@ -194,7 +194,7 @@ def accumulate(path, key, *, conf=_config):
     return result
 
 
-def set(path, key, value, *, conf=_config):
+def set(path, key, value, conf=_config):
     """Set the value of property 'key' for this session"""
     for p in path:
         try:
@@ -204,7 +204,7 @@ def set(path, key, value, *, conf=_config):
     conf[key] = value
 
 
-def setdefault(path, key, value, *, conf=_config):
+def setdefault(path, key, value, conf=_config):
     """Set the value of property 'key' if it doesn't exist"""
     for p in path:
         try:
@@ -214,7 +214,7 @@ def setdefault(path, key, value, *, conf=_config):
     return conf.setdefault(key, value)
 
 
-def unset(path, key, *, conf=_config):
+def unset(path, key, conf=_config):
     """Unset the value of property 'key'"""
     try:
         for p in path:
diff --git a/gallery_dl/cookies.py b/gallery_dl/cookies.py
index 3d715a77..78e73bfe 100644
--- a/gallery_dl/cookies.py
+++ b/gallery_dl/cookies.py
@@ -412,18 +412,17 @@ class ChromeCookieDecryptor:
         raise NotImplementedError("Must be implemented by sub classes")
 
 
-def get_cookie_decryptor(browser_root, browser_keyring_name, *, keyring=None):
+def get_cookie_decryptor(browser_root, browser_keyring_name, keyring=None):
     if sys.platform in ("win32", "cygwin"):
         return WindowsChromeCookieDecryptor(browser_root)
     elif sys.platform == "darwin":
         return MacChromeCookieDecryptor(browser_keyring_name)
     else:
-        return LinuxChromeCookieDecryptor(
-            browser_keyring_name, keyring=keyring)
+        return LinuxChromeCookieDecryptor(browser_keyring_name, keyring)
 
 
 class LinuxChromeCookieDecryptor(ChromeCookieDecryptor):
-    def __init__(self, browser_keyring_name, *, keyring=None):
+    def __init__(self, browser_keyring_name, keyring=None):
         self._v10_key = self.derive_key(b"peanuts")
         password = _get_linux_keyring_password(browser_keyring_name, keyring)
         self._v11_key = None if password is None else self.derive_key(password)
diff --git a/gallery_dl/extractor/common.py b/gallery_dl/extractor/common.py
index 8024be9f..8e3a9a9b 100644
--- a/gallery_dl/extractor/common.py
+++ b/gallery_dl/extractor/common.py
@@ -106,7 +106,7 @@ class Extractor():
             values[:0] = config.accumulate((self.subcategory,), key, conf=conf)
         return values
 
-    def request(self, url, *, method="GET", session=None,
+    def request(self, url, method="GET", session=None,
                 retries=None, retry_codes=None, encoding=None,
                 fatal=True, notfound=None, **kwargs):
         if session is None:
@@ -180,7 +180,7 @@ class Extractor():
 
         raise exception.HttpError(msg, response)
 
-    def wait(self, *, seconds=None, until=None, adjust=1.0,
+    def wait(self, seconds=None, until=None, adjust=1.0,
              reason="rate limit reset"):
         now = time.time()
 
@@ -371,7 +371,7 @@ class Extractor():
             except OSError as exc:
                 self.log.warning("cookies: %s", exc)
 
-    def _update_cookies(self, cookies, *, domain=""):
+    def _update_cookies(self, cookies, domain=""):
         """Update the session's cookiejar with 'cookies'"""
         if isinstance(cookies, dict):
             self._update_cookies_dict(cookies, domain or self.cookiedomain)
@@ -391,7 +391,7 @@ class Extractor():
         for name, value in cookiedict.items():
             setcookie(name, value, domain=domain)
 
-    def _check_cookies(self, cookienames, *, domain=None):
+    def _check_cookies(self, cookienames, domain=None):
         """Check if all 'cookienames' are in the session's cookiejar"""
         if not self._cookiejar:
             return False
diff --git a/gallery_dl/extractor/oauth.py b/gallery_dl/extractor/oauth.py
index 404f296d..824757ce 100644
--- a/gallery_dl/extractor/oauth.py
+++ b/gallery_dl/extractor/oauth.py
@@ -134,7 +134,7 @@ class OAuthBase(Extractor):
 
     def _oauth2_authorization_code_grant(
             self, client_id, client_secret, default_id, default_secret,
-            auth_url, token_url, *, scope="read", duration="permanent",
+            auth_url, token_url, scope="read", duration="permanent",
             key="refresh_token", auth=True, cache=None, instance=None):
         """Perform an OAuth2 authorization code grant"""