diff --git a/models/smcw/smcw_two_scale_convergence_tester.cpp b/models/smcw/smcw_two_scale_convergence_tester.cpp
index 1ab381d39..7a4e62624 100644
--- a/models/smcw/smcw_two_scale_convergence_tester.cpp
+++ b/models/smcw/smcw_two_scale_convergence_tester.cpp
@@ -31,13 +31,13 @@ StandardModelCW_convergence_tester::~StandardModelCW_convergence_tester()
 
 double StandardModelCW_convergence_tester::max_rel_diff() const
 {
-   const StandardModelCW<Two_scale>* model = get_model();
-   const StandardModelCW<Two_scale>* last_iteration_model = get_last_iteration_model();
+   const StandardModelCW<Two_scale>& model = get_model();
+   const StandardModelCW<Two_scale>& last_iteration_model = get_last_iteration_model();
 
-   const double dg4 = std::fabs(model->displayGaugeCoupling(4)
-                                - last_iteration_model->displayGaugeCoupling(4));
-   const double dlamda = std::fabs(model->displayLambda()
-                                   - last_iteration_model->displayLambda());
+   const double dg4 = std::fabs(model.displayGaugeCoupling(4)
+                                - last_iteration_model.displayGaugeCoupling(4));
+   const double dlamda = std::fabs(model.displayLambda()
+                                   - last_iteration_model.displayLambda());
    const double max_diff = std::max(dg4, dlamda);
 
    return max_diff;
@@ -48,4 +48,4 @@ unsigned int StandardModelCW_convergence_tester::max_iterations() const
    return 10;
 }
 
-}
+} // namespace flexiblesusy