diff --git a/src/DIRAC/__init__.py b/src/DIRAC/__init__.py
index a408647cc85..343857dbf8f 100755
--- a/src/DIRAC/__init__.py
+++ b/src/DIRAC/__init__.py
@@ -61,7 +61,7 @@
 import sys
 from collections.abc import Sequence
 from pkgutil import extend_path
-from typing import Any, Optional, Union
+from typing import Any, NoReturn, Optional, Union
 
 __path__ = extend_path(__path__, __name__)
 
@@ -293,7 +293,7 @@ def siteName():
 from DIRAC.Core.Utilities.Platform import getPlatformString, getPlatform, getPlatformTuple
 
 
-def exit(exitCode=0):
+def exit(exitCode=0) -> NoReturn:
     """
     Finish execution using callbacks
     """