diff --git a/src/gui_set_project_info.m b/src/gui_set_project_info.m
index 24c5b7d1895bdb2baec615a95ebf587059f040f0..54603ea429568fc629966ee6dadd4cbb9ebd933f 100644
--- a/src/gui_set_project_info.m
+++ b/src/gui_set_project_info.m
@@ -44,6 +44,7 @@ project_info.mod_file_already_run = false;
 project_info.first_obs = 1;
 project_info.freq = 2;
 project_info.first_obs_date = dates('1q1');
+project_info.last_obs_date = dates('1q1');
 project_info.nobs = '';
 project_info.data_file = '';