diff --git a/examples/FEM/polyXtal/numerics.config b/examples/FEM/polyXtal/numerics.config
index 23edd1823..330114825 100644
--- a/examples/FEM/polyXtal/numerics.config
+++ b/examples/FEM/polyXtal/numerics.config
@@ -1,2 +1,3 @@
 residualStiffness 0.001
 charLength        0.02
+petsc_options -mech_snes_type newtonls -mech_ksp_type fgmres -mech_pc_type ml -mech_ksp_monitor
\ No newline at end of file