diff --git a/matlab/+occbin/IVF_core.m b/matlab/+occbin/IVF_core.m
index efc3f6e844012c95f724fec1f01043a006f2e5ae..ad943bafbe4514dfddd9db89763bd61339f9f3a5 100644
--- a/matlab/+occbin/IVF_core.m
+++ b/matlab/+occbin/IVF_core.m
@@ -1,5 +1,5 @@
 function [filtered_errs, resids, Emat, stateval, error_code] = IVF_core(M_,oo_,options_,err_index,filtered_errs_init,my_obs_list,obs,init_val)
-% function [filtered_errs, resids, Emat, stateval] = IVF_core(M_,oo_,options_,err_index,filtered_errs_init,my_obs_list,obs,init_val)
+% function [filtered_errs, resids, Emat, stateval, error_code] = IVF_core(M_,oo_,options_,err_index,filtered_errs_init,my_obs_list,obs,init_val)
 % Computes thre
 %
 % Outputs: