diff --git a/masque/shapes/polygon.py b/masque/shapes/polygon.py
index cbcbe63..22b87cf 100644
--- a/masque/shapes/polygon.py
+++ b/masque/shapes/polygon.py
@@ -105,7 +105,8 @@ class Polygon(Shape):
             self.offset = offset
             self.repetition = repetition
             self.annotations = annotations if annotations is not None else {}
-        self.rotate(rotation)
+        if rotation:
+            self.rotate(rotation)
 
     def __deepcopy__(self, memo: dict | None = None) -> 'Polygon':
         memo = {} if memo is None else memo