diff --git a/matRad/optimization/optimizer/matRad_OptimizerFmincon.m b/matRad/optimization/optimizer/matRad_OptimizerFmincon.m
index 55c891a5b..b17ea574a 100644
--- a/matRad/optimization/optimizer/matRad_OptimizerFmincon.m
+++ b/matRad/optimization/optimizer/matRad_OptimizerFmincon.m
@@ -65,7 +65,6 @@
                                        'AlwaysHonorConstraints', 'bounds', ...
                                        'MaxIterations', matRad_cfg.defaults.propOpt.maxIter, ...
                                        'MaxFunctionEvaluations', 3000, ...
-                                       'CheckGradients', false, ...
                                        'HessianApproximation', {'lbfgs', 50}, ...
                                        'UseParallel', true, ...
                                        'Diagnostics', optDiag, ...