diff --git a/gtsam.h b/gtsam.h
index cdf9d70d7..5cee11629 100644
--- a/gtsam.h
+++ b/gtsam.h
@@ -1730,6 +1730,10 @@ virtual class NonlinearOptimizerParams {
   void setVerbosity(string s);
 };
 
+bool checkConvergence(double relativeErrorTreshold,
+    double absoluteErrorTreshold, double errorThreshold,
+    double currentError, double newError);
+
 #include <gtsam/nonlinear/SuccessiveLinearizationOptimizer.h>
 virtual class SuccessiveLinearizationParams : gtsam::NonlinearOptimizerParams {
   SuccessiveLinearizationParams();
diff --git a/gtsam/nonlinear/NonlinearOptimizer.h b/gtsam/nonlinear/NonlinearOptimizer.h
index a2bb7da22..78ba79e9d 100644
--- a/gtsam/nonlinear/NonlinearOptimizer.h
+++ b/gtsam/nonlinear/NonlinearOptimizer.h
@@ -251,6 +251,6 @@ protected:
  */
 GTSAM_EXPORT bool checkConvergence(double relativeErrorTreshold,
     double absoluteErrorTreshold, double errorThreshold,
-    double currentError, double newError, NonlinearOptimizerParams::Verbosity verbosity);
+    double currentError, double newError, NonlinearOptimizerParams::Verbosity verbosity = NonlinearOptimizerParams::SILENT);
 
 } // gtsam