diff --git a/cpp/gtsam.h b/cpp/gtsam.h
index 011339411..87786fb02 100644
--- a/cpp/gtsam.h
+++ b/cpp/gtsam.h
@@ -119,8 +119,8 @@ class Point2Prior {
   Point2Prior(Vector mu, double sigma, string key);
   Vector error_vector(const VectorConfig& c) const;
   LinearFactor* linearize(const VectorConfig& c) const;
-  double get_sigma();
-  Vector get_measurement();
+  double sigma();
+  Vector measurement();
   double error(const VectorConfig& c) const;
   void print() const;
 };
@@ -129,8 +129,8 @@ class Simulated2DOdometry {
   Simulated2DOdometry(Vector odo, double sigma, string key, string key2);
   Vector error_vector(const VectorConfig& c) const;
   LinearFactor* linearize(const VectorConfig& c) const;
-  double get_sigma();
-  Vector get_measurement();
+  double sigma();
+  Vector measurement();
   double error(const VectorConfig& c) const;
   void print() const;
 };
@@ -139,8 +139,8 @@ class Simulated2DMeasurement {
   Simulated2DMeasurement(Vector odo, double sigma, string key, string key2);
   Vector error_vector(const VectorConfig& c) const;
   LinearFactor* linearize(const VectorConfig& c) const;
-  double get_sigma();
-  Vector get_measurement();
+  double sigma();
+  Vector measurement();
   double error(const VectorConfig& c) const;
   void print() const;
 };