diff --git a/jedi/evaluate/context/namespace.py b/jedi/evaluate/context/namespace.py
index e40c23a5..7ae0624c 100644
--- a/jedi/evaluate/context/namespace.py
+++ b/jedi/evaluate/context/namespace.py
@@ -1,8 +1,7 @@
 import os
 from itertools import chain
 
-from jedi._compatibility import use_metaclass
-from jedi.evaluate.cache import evaluator_method_cache, CachedMetaClass
+from jedi.evaluate.cache import evaluator_method_cache
 from jedi.evaluate import imports
 from jedi.evaluate.filters import DictFilter, AbstractNameDefinition
 from jedi.evaluate.base_context import NO_CONTEXTS, TreeContext
@@ -24,17 +23,18 @@ class ImplicitNSName(AbstractNameDefinition):
         return self.implicit_ns_context
 
 
-class ImplicitNamespaceContext(use_metaclass(CachedMetaClass, TreeContext)):
+class ImplicitNamespaceContext(TreeContext):
     """
     Provides support for implicit namespace packages
     """
     api_type = 'module'
     parent_context = None
 
-    def __init__(self, evaluator, fullname):
+    def __init__(self, evaluator, fullname, paths):
         super(ImplicitNamespaceContext, self).__init__(evaluator, parent_context=None)
         self.evaluator = evaluator
-        self.fullname = fullname
+        self._fullname = fullname
+        self.paths = paths
 
     def get_filters(self, search_global, until_position=None, origin_scope=None):
         yield DictFilter(self._sub_modules_dict())
@@ -51,7 +51,7 @@ class ImplicitNamespaceContext(use_metaclass(CachedMetaClass, TreeContext)):
     def py__package__(self):
         """Return the fullname
         """
-        return self.fullname
+        return self._fullname
 
     @property
     def py__path__(self):
@@ -61,8 +61,7 @@ class ImplicitNamespaceContext(use_metaclass(CachedMetaClass, TreeContext)):
     def _sub_modules_dict(self):
         names = {}
 
-        paths = self.paths
-        file_names = chain.from_iterable(os.listdir(path) for path in paths)
+        file_names = chain.from_iterable(os.listdir(path) for path in self.paths)
         mods = [
             file_name.rpartition('.')[0] if '.' in file_name else file_name
             for file_name in file_names
diff --git a/jedi/evaluate/imports.py b/jedi/evaluate/imports.py
index e10443bd..a31bb986 100644
--- a/jedi/evaluate/imports.py
+++ b/jedi/evaluate/imports.py
@@ -380,9 +380,11 @@ class Importer(object):
 
         if isinstance(module_path, ImplicitNSInfo):
             from jedi.evaluate.context.namespace import ImplicitNamespaceContext
-            fullname, paths = module_path.name, module_path.paths
-            module = ImplicitNamespaceContext(self._evaluator, fullname=fullname)
-            module.paths = paths
+            module = ImplicitNamespaceContext(
+                self._evaluator,
+                fullname=module_path.name,
+                paths=module_path.paths,
+            )
         elif module_file is not None or module_path.endswith(('.py', '.zip', '.egg')):
             module = _load_module(self._evaluator, module_path, code, sys_path, parent_module)
         else: