diff --git a/masque/shapes/text.py b/masque/shapes/text.py
index 87293fc..65a9213 100644
--- a/masque/shapes/text.py
+++ b/masque/shapes/text.py
@@ -149,7 +149,7 @@ class Text(PositionableImpl, RotatableImpl, Shape):
                 if self.mirrored:
                     poly.mirror()
                 poly.scale_by(self.height)
-                poly.offset = self.offset + [total_advance, 0]
+                poly.translate(self.offset + [total_advance, 0])
                 poly.rotate_around(self.offset, self.rotation)
                 all_polygons += [poly]