diff --git a/gtsam/geometry/geometry.i b/gtsam/geometry/geometry.i
index 151c42155..6ad7baedd 100644
--- a/gtsam/geometry/geometry.i
+++ b/gtsam/geometry/geometry.i
@@ -907,9 +907,9 @@ class Similarity2 {
   static gtsam::Similarity2 Align(const gtsam::Pose2Pairs& abPosePairs);
 
   // Standard Interface
-  const Matrix matrix() const;
-  const gtsam::Rot2& rotation();
-  const gtsam::Point2& translation();
+  Matrix matrix() const;
+  gtsam::Rot2& rotation();
+  gtsam::Point2& translation();
   double scale() const;
 };
 
@@ -929,9 +929,9 @@ class Similarity3 {
   static gtsam::Similarity3 Align(const gtsam::Pose3Pairs& abPosePairs);
 
   // Standard Interface
-  const Matrix matrix() const;
-  const gtsam::Rot3& rotation();
-  const gtsam::Point3& translation();
+  Matrix matrix() const;
+  gtsam::Rot3& rotation();
+  gtsam::Point3& translation();
   double scale() const;
 };