diff --git a/src/prompt_toolkit/application/application.py b/src/prompt_toolkit/application/application.py index d4637811b..d93c24398 100644 --- a/src/prompt_toolkit/application/application.py +++ b/src/prompt_toolkit/application/application.py @@ -1621,5 +1621,6 @@ def _restore_sigint_from_ctypes() -> Generator[None, None, None]: try: yield finally: - signal.signal(signal.SIGINT, sigint) + if sigint is not None: + signal.signal(signal.SIGINT, sigint) pythonapi.PyOS_setsig(signal.SIGINT, sigint_os)