diff --git a/examples/GreshoVortex_2D/gresho.yml b/examples/GreshoVortex_2D/gresho.yml
index d3de962b9bd37ff61e3bc293899d3b77aa6aed99..746bad295448f6513c31431e9e206143e9565328 100644
--- a/examples/GreshoVortex_2D/gresho.yml
+++ b/examples/GreshoVortex_2D/gresho.yml
@@ -6,6 +6,9 @@ InternalUnitSystem:
   UnitCurrent_in_cgs:  1   # Amperes
   UnitTemp_in_cgs:     1   # Kelvin
 
+Scheduler:
+  max_top_level_cells: 15
+
 # Parameters governing the time integration
 TimeIntegration:
   time_begin: 0.    # The starting time of the simulation (in internal units).