diff --git a/gtsam.h b/gtsam.h
index 2cd6415a6..838c48efc 100644
--- a/gtsam.h
+++ b/gtsam.h
@@ -1514,7 +1514,7 @@ virtual class SubgraphSolverParameters : gtsam::ConjugateGradientParameters {
   void print() const;
 };
 
-class SubgraphSolver  {
+virtual class SubgraphSolver  {
   SubgraphSolver(const gtsam::GaussianFactorGraph &A, const gtsam::SubgraphSolverParameters &parameters, const gtsam::Ordering& ordering);
   SubgraphSolver(const gtsam::GaussianFactorGraph &Ab1, const gtsam::GaussianFactorGraph &Ab2, const gtsam::SubgraphSolverParameters &parameters, const gtsam::Ordering& ordering);
   gtsam::VectorValues optimize() const;
@@ -1853,7 +1853,7 @@ virtual class NonlinearOptimizerParams {
   
   void setLinearSolverType(string solver);
   void setOrdering(const gtsam::Ordering& ordering);
-  void setIterativeParams(const gtsam::SubgraphSolverParameters &params);
+  void setIterativeParams(gtsam::IterativeOptimizationParameters* params);
 
   bool isMultifrontal() const;
   bool isSequential() const;
diff --git a/gtsam/linear/ConjugateGradientSolver.h b/gtsam/linear/ConjugateGradientSolver.h
index 2382a0eb1..6e8509309 100644
--- a/gtsam/linear/ConjugateGradientSolver.h
+++ b/gtsam/linear/ConjugateGradientSolver.h
@@ -71,6 +71,8 @@ public:
   inline void setEpsilon_rel(double value) { epsilon_rel_ = value; }
   inline void setEpsilon_abs(double value) { epsilon_abs_ = value; }
 
+
+  void print() const { Base::print(); }
   virtual void print(std::ostream &os) const;
 
   static std::string blasTranslator(const BLASKernel k) ;
diff --git a/gtsam/linear/SubgraphSolver.h b/gtsam/linear/SubgraphSolver.h
index e4d3f50f3..ac8a9da87 100644
--- a/gtsam/linear/SubgraphSolver.h
+++ b/gtsam/linear/SubgraphSolver.h
@@ -28,6 +28,7 @@ class GTSAM_EXPORT SubgraphSolverParameters : public ConjugateGradientParameters
 public:
   typedef ConjugateGradientParameters Base;
   SubgraphSolverParameters() : Base() {}
+  void print() const { Base::print(); }
   virtual void print(std::ostream &os) const { Base::print(os); }
 };
 
diff --git a/gtsam/nonlinear/NonlinearOptimizerParams.cpp b/gtsam/nonlinear/NonlinearOptimizerParams.cpp
index e0b6e0c6c..b7ad342ca 100644
--- a/gtsam/nonlinear/NonlinearOptimizerParams.cpp
+++ b/gtsam/nonlinear/NonlinearOptimizerParams.cpp
@@ -66,8 +66,8 @@ std::string NonlinearOptimizerParams::verbosityTranslator(
 
 /* ************************************************************************* */
 void NonlinearOptimizerParams::setIterativeParams(
-    const SubgraphSolverParameters &params) {
-  iterativeParams = boost::make_shared<SubgraphSolverParameters>(params);
+    const boost::shared_ptr<IterativeOptimizationParameters> params) {
+  iterativeParams = params;
 }
 
 /* ************************************************************************* */
diff --git a/gtsam/nonlinear/NonlinearOptimizerParams.h b/gtsam/nonlinear/NonlinearOptimizerParams.h
index 641c6da24..cd5496209 100644
--- a/gtsam/nonlinear/NonlinearOptimizerParams.h
+++ b/gtsam/nonlinear/NonlinearOptimizerParams.h
@@ -148,7 +148,9 @@ public:
   void setLinearSolverType(const std::string& solver) {
     linearSolverType = linearSolverTranslator(solver);
   }
-  void setIterativeParams(const SubgraphSolverParameters& params);
+
+  void setIterativeParams(const boost::shared_ptr<IterativeOptimizationParameters> params);
+
   void setOrdering(const Ordering& ordering) {
     this->ordering = ordering;
   }