diff --git a/matlab/+occbin/IVF_core.m b/matlab/+occbin/IVF_core.m
index 1ffe0a153515810cdc992906a6b0cae5fc17b1de..b3415d3129fcb3097db0106279f07eb71b0b44be 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: