diff --git a/matlab/basic_plan.m b/matlab/basic_plan.m
index cd7b09a8b..c7b4cb360 100644
--- a/matlab/basic_plan.m
+++ b/matlab/basic_plan.m
@@ -57,7 +57,7 @@ function plan = basic_plan(plan, exogenous, expectation_type, date, value)
       if ~isempty(common_var)
           common_date = intersect(date, plan.constrained_date_{common_var});
           if ~isempty(common_date)
-              [date, i_date] = setdiff(date, common_date);
+              [date_, i_date] = setdiff(date, common_date);
               value = value(i_date);
               if common_date.length > 1
                   the_dates = [cell2mat(strings(common_date(1))) ':' cell2mat(strings(common_date(end)))];