diff --git a/matlab/perfect-foresight-models/sim1_purely_backward.m b/matlab/perfect-foresight-models/sim1_purely_backward.m
index 91e76bf45..b3d88a712 100644
--- a/matlab/perfect-foresight-models/sim1_purely_backward.m
+++ b/matlab/perfect-foresight-models/sim1_purely_backward.m
@@ -42,7 +42,7 @@ for it = 2:options.periods+1
     yb = endogenousvariables(:,it-1);        % Values at previous period, also used as guess value for current period
     yb1 = yb(iyb);
     [tmp, check] = solve1(dynamicmodel, [yb1; yb], 1:M.endo_nbr, nyb+1:nyb+M.endo_nbr, ...
-                          1, options.gstep, options.solve_tolf, options.solve_tolx, ...
+                          1, options.gstep, options.dynatol.f, options.dynatol.x, ...
                           options.simul.maxit, options.debug, exogenousvariables, ...
                           M.params, steadystate, it+M.maximum_lag-1);
     if check