diff --git a/gtsam/linear/linear.i b/gtsam/linear/linear.i
index 7b1ce550f..deebe0bfc 100644
--- a/gtsam/linear/linear.i
+++ b/gtsam/linear/linear.i
@@ -625,7 +625,7 @@ virtual class SubgraphSolverParameters : gtsam::ConjugateGradientParameters {
 
 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);
+  SubgraphSolver(const gtsam::GaussianFactorGraph &Ab1, const gtsam::GaussianFactorGraph& Ab2, const gtsam::SubgraphSolverParameters &parameters, const gtsam::Ordering& ordering);
   gtsam::VectorValues optimize() const;
 };