diff --git a/gtsam.h b/gtsam.h
index 13f4d6121..e679b6838 100644
--- a/gtsam.h
+++ b/gtsam.h
@@ -484,7 +484,7 @@ class Rot3 {
   // Standard Constructors and Named Constructors
   Rot3();
   Rot3(Matrix R);
-  Rot3(const Point3& col1, const Point3& col2, const Point3& col3);
+  Rot3(const gtsam::Point3& col1, const gtsam::Point3& col2, const gtsam::Point3& col3);
   Rot3(double R11, double R12, double R13,
       double R21, double R22, double R23,
       double R31, double R32, double R33);