diff --git a/gallery_dl/extractor/booru.py b/gallery_dl/extractor/booru.py
index 0176d769..378e1440 100644
--- a/gallery_dl/extractor/booru.py
+++ b/gallery_dl/extractor/booru.py
@@ -8,7 +8,7 @@
 
 """Base classes for extractors for danbooru and co"""
 
-from .common import Extractor, Message, SharedConfigMixin
+from .common import Extractor, Message
 from .. import text, exception
 from xml.etree import ElementTree
 import collections
@@ -17,7 +17,7 @@ import operator
 import re
 
 
-class BooruExtractor(SharedConfigMixin, Extractor):
+class BooruExtractor(Extractor):
     """Base class for all booru extractors"""
     basecategory = "booru"
     filename_fmt = "{category}_{id}_{md5}.{extension}"
diff --git a/gallery_dl/extractor/common.py b/gallery_dl/extractor/common.py
index 5efea4a2..5480827e 100644
--- a/gallery_dl/extractor/common.py
+++ b/gallery_dl/extractor/common.py
@@ -24,6 +24,7 @@ class Extractor():
 
     category = ""
     subcategory = ""
+    basecategory = ""
     categorytransfer = False
     directory_fmt = ("{category}",)
     filename_fmt = "{filename}.{extension}"
@@ -54,6 +55,10 @@ class Extractor():
         if self._retries < 0:
             self._retries = float("inf")
 
+        if self.basecategory:
+            self.config = self._config_shared
+            self.config_accumulate = self._config_shared_accumulate
+
         self._init_headers()
         self._init_cookies()
         self._init_proxies()
@@ -80,6 +85,19 @@ class Extractor():
     def config_accumulate(self, key):
         return config.accumulate(self._cfgpath, key)
 
+    def _config_shared(self, key, default=None):
+        return config.interpolate_common(("extractor",), (
+            (self.category, self.subcategory),
+            (self.basecategory, self.subcategory),
+        ), key, default)
+
+    def _config_shared_accumulate(self, key):
+        values = config.accumulate(self._cfgpath, key)
+        conf = config.get(("extractor",), self.basecategory)
+        if conf:
+            values[:0] = config.accumulate((self.subcategory,), key, conf=conf)
+        return values
+
     def request(self, url, *, method="GET", session=None, retries=None,
                 encoding=None, fatal=True, notfound=None, **kwargs):
         tries = 1
@@ -506,28 +524,6 @@ class AsynchronousMixin():
         messages.put(None)
 
 
-class SharedConfigMixin():
-    """Enable sharing of config settings based on 'basecategory'"""
-    basecategory = ""
-
-    def config(self, key, default=None):
-        return config.interpolate_common(
-            ("extractor",), (
-                (self.category, self.subcategory),
-                (self.basecategory, self.subcategory),
-            ), key, default,
-        )
-
-    def config_accumulate(self, key):
-        values = config.accumulate(self._cfgpath, key)
-
-        conf = config.get(("extractor",), self.basecategory)
-        if conf:
-            values[:0] = config.accumulate((self.subcategory,), key, conf=conf)
-
-        return values
-
-
 def generate_extractors(extractor_data, symtable, classes):
     """Dynamically generate Extractor classes"""
     extractors = config.get(("extractor",), classes[0].basecategory)
diff --git a/gallery_dl/extractor/danbooru.py b/gallery_dl/extractor/danbooru.py
index 1ebaf5bf..ca37cb49 100644
--- a/gallery_dl/extractor/danbooru.py
+++ b/gallery_dl/extractor/danbooru.py
@@ -8,7 +8,7 @@
 
 """Extractors for https://danbooru.donmai.us/"""
 
-from .common import Extractor, Message, SharedConfigMixin
+from .common import Extractor, Message
 from .. import text
 import datetime
 
@@ -20,7 +20,7 @@ BASE_PATTERN = (
 )
 
 
-class DanbooruExtractor(SharedConfigMixin, Extractor):
+class DanbooruExtractor(Extractor):
     """Base class for danbooru extractors"""
     basecategory = "booru"
     category = "danbooru"
diff --git a/gallery_dl/extractor/foolfuuka.py b/gallery_dl/extractor/foolfuuka.py
index f2019ca1..8a03dc99 100644
--- a/gallery_dl/extractor/foolfuuka.py
+++ b/gallery_dl/extractor/foolfuuka.py
@@ -8,13 +8,13 @@
 
 """Extractors for 4chan archives based on FoolFuuka"""
 
-from .common import Extractor, Message, SharedConfigMixin, generate_extractors
+from .common import Extractor, Message, generate_extractors
 from .. import text
 import itertools
 import operator
 
 
-class FoolfuukaThreadExtractor(SharedConfigMixin, Extractor):
+class FoolfuukaThreadExtractor(Extractor):
     """Base extractor for FoolFuuka based boards/archives"""
     basecategory = "foolfuuka"
     subcategory = "thread"
diff --git a/gallery_dl/extractor/foolslide.py b/gallery_dl/extractor/foolslide.py
index 42456177..db5e250b 100644
--- a/gallery_dl/extractor/foolslide.py
+++ b/gallery_dl/extractor/foolslide.py
@@ -12,7 +12,6 @@ from .common import (
     Extractor,
     ChapterExtractor,
     MangaExtractor,
-    SharedConfigMixin,
     Message,
     generate_extractors,
 )
@@ -20,7 +19,7 @@ from .. import text, util
 import json
 
 
-class FoolslideBase(SharedConfigMixin):
+class FoolslideBase():
     """Base class for FoOlSlide extractors"""
     basecategory = "foolslide"
 
diff --git a/gallery_dl/extractor/imagehosts.py b/gallery_dl/extractor/imagehosts.py
index ad5a5085..28af1791 100644
--- a/gallery_dl/extractor/imagehosts.py
+++ b/gallery_dl/extractor/imagehosts.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 
-# Copyright 2016-2019 Mike Fährmann
+# Copyright 2016-2020 Mike Fährmann
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
@@ -8,13 +8,13 @@
 
 """Collection of extractors for various imagehosts"""
 
-from .common import Extractor, Message, SharedConfigMixin
+from .common import Extractor, Message
 from .. import text, exception
 from ..cache import memcache
 from os.path import splitext
 
 
-class ImagehostImageExtractor(SharedConfigMixin, Extractor):
+class ImagehostImageExtractor(Extractor):
     """Base class for single-image extractors for various imagehosts"""
     basecategory = "imagehost"
     subcategory = "image"
diff --git a/gallery_dl/extractor/paheal.py b/gallery_dl/extractor/paheal.py
index e0b04966..88f7f65a 100644
--- a/gallery_dl/extractor/paheal.py
+++ b/gallery_dl/extractor/paheal.py
@@ -6,13 +6,13 @@
 # it under the terms of the GNU General Public License version 2 as
 # published by the Free Software Foundation.
 
-"""Extract images from https://rule34.paheal.net/"""
+"""Extractors for https://rule34.paheal.net/"""
 
-from .common import Extractor, Message, SharedConfigMixin
+from .common import Extractor, Message
 from .. import text
 
 
-class PahealExtractor(SharedConfigMixin, Extractor):
+class PahealExtractor(Extractor):
     """Base class for paheal extractors"""
     basecategory = "booru"
     category = "paheal"
diff --git a/gallery_dl/extractor/reactor.py b/gallery_dl/extractor/reactor.py
index a20312f7..cfbab1d0 100644
--- a/gallery_dl/extractor/reactor.py
+++ b/gallery_dl/extractor/reactor.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 
-# Copyright 2019 Mike Fährmann
+# Copyright 2019-2020 Mike Fährmann
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
@@ -8,7 +8,7 @@
 
 """Generic extractors for *reactor sites"""
 
-from .common import Extractor, Message, SharedConfigMixin
+from .common import Extractor, Message
 from .. import text
 import urllib.parse
 import random
@@ -19,7 +19,7 @@ import json
 BASE_PATTERN = r"(?:https?://)?((?:[^/.]+\.)?reactor\.cc)"
 
 
-class ReactorExtractor(SharedConfigMixin, Extractor):
+class ReactorExtractor(Extractor):
     """Base class for *reactor.cc extractors"""
     basecategory = "reactor"
     filename_fmt = "{post_id}_{num:>02}{title[:100]:?_//}.{extension}"
diff --git a/gallery_dl/extractor/sankaku.py b/gallery_dl/extractor/sankaku.py
index a9252f50..3beeb488 100644
--- a/gallery_dl/extractor/sankaku.py
+++ b/gallery_dl/extractor/sankaku.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 
-# Copyright 2014-2019 Mike Fährmann
+# Copyright 2014-2020 Mike Fährmann
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License version 2 as
@@ -8,7 +8,7 @@
 
 """Extractors for https://chan.sankakucomplex.com/"""
 
-from .common import Extractor, Message, SharedConfigMixin
+from .common import Extractor, Message
 from .. import text, util, exception
 from ..cache import cache
 import collections
@@ -17,7 +17,7 @@ import time
 import re
 
 
-class SankakuExtractor(SharedConfigMixin, Extractor):
+class SankakuExtractor(Extractor):
     """Base class for sankaku extractors"""
     basecategory = "booru"
     category = "sankaku"
diff --git a/gallery_dl/extractor/shopify.py b/gallery_dl/extractor/shopify.py
index 9d1df18c..d65f3344 100644
--- a/gallery_dl/extractor/shopify.py
+++ b/gallery_dl/extractor/shopify.py
@@ -8,12 +8,12 @@
 
 """Extractors for Shopify instances"""
 
-from .common import Extractor, Message, SharedConfigMixin, generate_extractors
+from .common import Extractor, Message, generate_extractors
 from .. import text
 import re
 
 
-class ShopifyExtractor(SharedConfigMixin, Extractor):
+class ShopifyExtractor(Extractor):
     """Base class for Shopify extractors"""
     basecategory = "shopify"
     filename_fmt = "{product[title]}_{num:>02}_{id}.{extension}"
diff --git a/test/test_results.py b/test/test_results.py
index 239b5add..6c4b25f3 100644
--- a/test/test_results.py
+++ b/test/test_results.py
@@ -368,7 +368,7 @@ def generate_tests():
     # filter available extractor classes
     extractors = [
         extr for extr in extractor.extractors()
-        if fltr(extr.category, getattr(extr, "basecategory", None))
+        if fltr(extr.category, extr.basecategory)
     ]
 
     # add 'test_...' methods