diff --git a/Lib/traceback.py b/Lib/traceback.py
index ab35da9..7a4c8e1 100644
--- a/Lib/traceback.py
+++ b/Lib/traceback.py
@@ -538,7 +538,9 @@
             self.__cause__._load_lines()
 
     def __eq__(self, other):
-        return self.__dict__ == other.__dict__
+        if isinstance(other, TracebackException):
+            return self.__dict__ == other.__dict__
+        return NotImplemented
 
     def __str__(self):
         return self._str