diff --git a/pendulum/datetime.py b/pendulum/datetime.py
index bb8b4bc8..66ca5543 100644
--- a/pendulum/datetime.py
+++ b/pendulum/datetime.py
@@ -243,7 +243,7 @@ def offset_hours(self) -> float | None:
     @property
     def timezone(self) -> Timezone | FixedTimezone | None:
         if not isinstance(self.tzinfo, (Timezone, FixedTimezone)):
-            return None
+            return pendulum.timezone(self.tzinfo.key)
 
         return self.tzinfo