diff --git a/gtsam/gtsam.i b/gtsam/gtsam.i
index 9859c6d57..79d489128 100644
--- a/gtsam/gtsam.i
+++ b/gtsam/gtsam.i
@@ -2925,7 +2925,7 @@ class ShonanAveragingParameters2 {
   void setOptimalityThreshold(double value);
   double getOptimalityThreshold() const;
   void setAnchor(size_t index, const gtsam::Rot2& value);
-  pair<size_t, Rot2> getAnchor();
+  pair<size_t, gtsam::Rot2> getAnchor();
   void setAnchorWeight(double value);
   double getAnchorWeight() const;
   void setKarcherWeight(double value);
@@ -2941,7 +2941,7 @@ class ShonanAveragingParameters3 {
   void setOptimalityThreshold(double value);
   double getOptimalityThreshold() const;
   void setAnchor(size_t index, const gtsam::Rot3& value);
-  pair<size_t, Rot3> getAnchor();
+  pair<size_t, gtsam::Rot3> getAnchor();
   void setAnchorWeight(double value);
   double getAnchorWeight() const;
   void setKarcherWeight(double value);