diff --git a/jedi/inference/references.py b/jedi/inference/references.py
index f8ca496f..1d62595f 100644
--- a/jedi/inference/references.py
+++ b/jedi/inference/references.py
@@ -5,7 +5,6 @@ from parso import python_bytes_to_unicode
 
 from jedi.file_io import KnownContentFileIO
 from jedi.inference.imports import SubModuleName, load_module_from_path
-from jedi.inference.compiled import CompiledObject
 from jedi.inference.filters import ParserTreeFilter
 from jedi.inference.gradual.conversion import convert_names
 
@@ -170,7 +169,7 @@ def _check_fs(inference_state, file_io, regex):
         return None
     new_file_io = KnownContentFileIO(file_io.path, code)
     m = load_module_from_path(inference_state, new_file_io)
-    if isinstance(m, CompiledObject):
+    if m.is_compiled():
         return None
     return m.as_context()
 
diff --git a/jedi/inference/value/klass.py b/jedi/inference/value/klass.py
index 7932f995..2acd21e0 100644
--- a/jedi/inference/value/klass.py
+++ b/jedi/inference/value/klass.py
@@ -191,7 +191,7 @@ class ClassMixin(object):
                 yield f
 
         for cls in self.py__mro__():
-            if isinstance(cls, compiled.CompiledObject):
+            if cls.is_compiled():
                 for filter in cls.get_filters(is_instance=is_instance):
                     yield filter
             else: