diff --git a/matlab/run_simulations.m b/matlab/run_simulations.m
index a534fe26ca87fff159d3f3e994ad395fb037b323..00e70c0f48bf40787c3d71f36dde70d628266041 100644
--- a/matlab/run_simulations.m
+++ b/matlab/run_simulations.m
@@ -12,6 +12,8 @@ function run_simulations(model, stack_solve_algo, static_solve_algo, niter, ccri
 
 % Copyright © 2024 Dynare Team
 
+global oo_
+
 id = 1:length(stack_solve_algo);
 jd = 1:length(static_solve_algo);