diff --git a/gtsam/slam/slam.i b/gtsam/slam/slam.i
index e41dee433..24139444c 100644
--- a/gtsam/slam/slam.i
+++ b/gtsam/slam/slam.i
@@ -336,7 +336,9 @@ virtual class FrobeniusBetweenFactor : gtsam::NoiseModelFactor {
 };
   
 #include <gtsam/slam/lago.h>
-gtsam::Values initialize(const gtsam::NonlinearFactorGraph& graph, const gtsam::Values& initialGuess);
-gtsam::Values initialize(const gtsam::NonlinearFactorGraph& graph, bool useOdometricPath);
-
+namespace lago {
+  gtsam::Values initialize(const gtsam::NonlinearFactorGraph& graph, const gtsam::Values& initialGuess);
+  gtsam::Values initialize(const gtsam::NonlinearFactorGraph& graph, bool useOdometricPath);
+}
+  
 }  // namespace gtsam