diff --git a/jc/tracebackplus.py b/jc/tracebackplus.py
index f7ddc46a..8ac15274 100644
--- a/jc/tracebackplus.py
+++ b/jc/tracebackplus.py
@@ -93,7 +93,7 @@ def lookup(name, frame, locals):
         return 'global', frame.f_globals[name]
     if '__builtins__' in frame.f_globals:
         builtins = frame.f_globals['__builtins__']
-        if type(builtins) is type({}):
+        if isinstance(builtins, dict):
             if name in builtins:
                 return 'builtin', builtins[name]
         else: