diff --git a/gtsam/nonlinear/GaussianISAM2-inl.h b/gtsam/nonlinear/GaussianISAM2-inl.h
index de3992d28..3d645377d 100644
--- a/gtsam/nonlinear/GaussianISAM2-inl.h
+++ b/gtsam/nonlinear/GaussianISAM2-inl.h
@@ -18,13 +18,12 @@
 #include <gtsam/inference/FactorGraph.h>
 #include <gtsam/linear/JacobianFactor.h>
 
-using namespace std;
-using namespace gtsam;
-
 #include <boost/bind.hpp>
 
 namespace gtsam {
 
+  using namespace std;
+
   /* ************************************************************************* */
   template<class CLIQUE>
   void optimize2(const boost::shared_ptr<CLIQUE>& clique, double threshold,