diff --git a/Lib/_pyrepl/fancy_termios.py b/Lib/_pyrepl/fancy_termios.py
index 5b85cb0f52521f..056437b21f3a76 100644
--- a/Lib/_pyrepl/fancy_termios.py
+++ b/Lib/_pyrepl/fancy_termios.py
@@ -40,7 +40,7 @@ def as_list(self):
             self.lflag,
             self.ispeed,
             self.ospeed,
-            self.cc,
+            self.cc[:],
         ]
 
     def copy(self):