diff --git a/docs/conf.py b/docs/conf.py
index ec2d8e56bd8a8d1e86711c47fb74ab471081c103..d710d6e18170c5d9f7937e4013abcff208b3c549 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -186,28 +186,3 @@ intersphinx_mapping = {"http://docs.python.org/": None}
 
 # Enable the new ReadTheDocs theme
 RTD_NEW_THEME = True
-
-
-# Mock out CFFI
-class Mock(object):
-    def __init__(self, *args, **kwargs):
-        pass
-
-    def __call__(self, *args, **kwargs):
-        return Mock()
-
-    @classmethod
-    def __getattr__(cls, name):
-        if name in ('__file__', '__path__'):
-            return '/dev/null'
-        else:
-            return Mock()
-
-    def __floordiv__(self, other):
-        return Mock()
-
-MOCK_MODULES = [
-    "cffi", "cffi.vengine_cpy", "cffi.vengine_gen", "cffi.verifier",
-]
-for mod_name in MOCK_MODULES:
-    sys.modules[mod_name] = Mock()