diff --git a/gtsam/nonlinear/nonlinear.i b/gtsam/nonlinear/nonlinear.i
index 73eaef125..c3f17c02e 100644
--- a/gtsam/nonlinear/nonlinear.i
+++ b/gtsam/nonlinear/nonlinear.i
@@ -527,8 +527,13 @@ template<PARAMS>
 virtual class GncParams {
   GncParams(const PARAMS& baseOptimizerParams);
   GncParams();
+  void setVerbosityGNC(const gtsam::GncParams::Verbosity value);
   void print(const string& str) const;
 };
+  
+typedef gtsam::GncParams::Verbosity::SILENT GncVerbositySilent;
+typedef gtsam::GncParams::Verbosity::SUMMARY GncVerbositySummary;
+typedef gtsam::GncParams::Verbosity::VALUES GncVerbosityValues;
 
 typedef gtsam::GncParams<gtsam::GaussNewtonParams> GncGaussNewtonParams;
 typedef gtsam::GncParams<gtsam::LevenbergMarquardtParams> GncLMParams;