diff --git a/jedi/evaluate/base_context.py b/jedi/evaluate/base_context.py
index c7869f1e..489147f9 100644
--- a/jedi/evaluate/base_context.py
+++ b/jedi/evaluate/base_context.py
@@ -123,15 +123,19 @@ def iterate_contexts(contexts, contextualized_node=None, is_async=False):
     )
 
 
-class TreeContextWrapper(object):
+class ContextWrapper(object):
     def __init__(self, wrapped_context):
         self._wrapped_context = wrapped_context
-        assert wrapped_context.tree_node
 
     @safe_property
     def name(self):
         from jedi.evaluate.filters import ContextName
-        return ContextName(self, self._wrapped_context.name.tree_name)
+        wrapped_name = self._wrapped_context.name
+        if wrapped_name.tree_name is not None:
+            return ContextName(self, wrapped_name.tree_name)
+        else:
+            from jedi.evaluate.compiled import CompiledContextName
+            return CompiledContextName(self, wrapped_name.string_name)
 
     def __getattr__(self, name):
         return getattr(self._wrapped_context, name)
diff --git a/jedi/evaluate/context/function.py b/jedi/evaluate/context/function.py
index 97be4ee6..bdfb1781 100644
--- a/jedi/evaluate/context/function.py
+++ b/jedi/evaluate/context/function.py
@@ -13,7 +13,7 @@ from jedi.evaluate.arguments import AnonymousArguments
 from jedi.evaluate.filters import ParserTreeFilter, FunctionExecutionFilter, \
     ContextName, AbstractNameDefinition, ParamName
 from jedi.evaluate.base_context import ContextualizedNode, NO_CONTEXTS, \
-    ContextSet, TreeContext, TreeContextWrapper
+    ContextSet, TreeContext, ContextWrapper
 from jedi.evaluate.lazy_context import LazyKnownContexts, LazyKnownContext, \
     LazyTreeContext
 from jedi.evaluate.context.typing import TypeVar
@@ -296,7 +296,7 @@ class FunctionExecutionContext(TreeContext):
                 return self.get_return_values()
 
 
-class OverloadedFunctionContext(TreeContextWrapper):
+class OverloadedFunctionContext(ContextWrapper):
     def __init__(self, function, overloaded_functions):
         super(OverloadedFunctionContext, self).__init__(function)
         self._overloaded_functions = overloaded_functions
diff --git a/jedi/plugins/stdlib.py b/jedi/plugins/stdlib.py
index 5da99a48..c81e20c5 100644
--- a/jedi/plugins/stdlib.py
+++ b/jedi/plugins/stdlib.py
@@ -21,7 +21,7 @@ from jedi.evaluate import compiled
 from jedi.evaluate.context.instance import \
     AbstractInstanceContext, CompiledInstance, BoundMethod, InstanceArguments
 from jedi.evaluate.base_context import ContextualizedNode, \
-    NO_CONTEXTS, ContextSet, TreeContextWrapper
+    NO_CONTEXTS, ContextSet, ContextWrapper
 from jedi.evaluate.context import ClassContext, ModuleContext, \
     FunctionExecutionContext
 from jedi.evaluate.context import iterable
diff --git a/jedi/plugins/typeshed.py b/jedi/plugins/typeshed.py
index a513962f..a2946614 100644
--- a/jedi/plugins/typeshed.py
+++ b/jedi/plugins/typeshed.py
@@ -7,7 +7,7 @@ from jedi.evaluate.cache import evaluator_function_cache
 from jedi.cache import memoize_method
 from jedi.parser_utils import get_call_signature_for_any
 from jedi.evaluate.base_context import ContextSet, iterator_to_context_set, \
-    TreeContextWrapper
+    ContextWrapper
 from jedi.evaluate.filters import AbstractTreeName, ParserTreeFilter, \
     TreeNameDefinition, NameWrapper, MergedFilter
 from jedi.evaluate.context import ModuleContext, FunctionContext, \
@@ -405,7 +405,7 @@ class StubOnlyModuleContext(ModuleContext):
             yield f
 
 
-class StubContextWithCompiled(TreeContextWrapper):
+class StubContextWithCompiled(ContextWrapper):
     def __init__(self, stub_context, compiled_context):
         super(StubContextWithCompiled, self).__init__(stub_context)
         self._compiled_context = compiled_context