diff --git a/libs/lib/xaal/lib/tools.py b/libs/lib/xaal/lib/tools.py
index b711b4906e6a0862b261bd7e70a4b3aaa005c074..e7c59738cd0654dfa13f9453e3c7c16a68b66fdc 100644
--- a/libs/lib/xaal/lib/tools.py
+++ b/libs/lib/xaal/lib/tools.py
@@ -78,7 +78,7 @@ def get_random_base_uuid(digit=2) -> UUID:
     return UUID.random_base(digit)
 
 
-def get_uuid(val: Union[UUID, str, None]) -> Optional[UUID]:
+def get_uuid(val: Union[UUID, str]) -> Optional[UUID]:
     if isinstance(val, UUID):
         return val
     if isinstance(val, str):