diff --git a/pyansi/__init__.py b/pyansi/__init__.py
index dc8f034..085c43b 100644
--- a/pyansi/__init__.py
+++ b/pyansi/__init__.py
@@ -551,7 +551,7 @@ class ANSI:
     @readline_wrap
     def DesktopNotification(
         self: Self,
-        identifier: Annotated[str, RegexMatch(re.compile(r"\A[a-zA-Z0-9-_+.]\z"))],
+        identifier: Annotated[str, RegexMatch(re.compile(r"\A[a-zA-Z0-9-_+.]\Z"))],
         title: str,
         body: str,
     ) -> str: