diff --git a/matlab/estimation/maximize_prior_density.m b/matlab/estimation/maximize_prior_density.m
index bc27db40a8a3056ff3331c633158a3c86f42945a..5c47e1a3c600e59383ea523498999c43ba6bde1e 100644
--- a/matlab/estimation/maximize_prior_density.m
+++ b/matlab/estimation/maximize_prior_density.m
@@ -54,7 +54,7 @@ function [xparams, lpd, hessian_mat] = ...
                                                                   names, ...
                                                                   [], ...
                                                                   [], ...
-                                                                  Prior,
+                                                                  Prior, ...
                                                                   options_, ...
                                                                   M_, ...
                                                                   estim_params_, ...