diff --git a/resources/variants/cartesio_0.8.inst.cfg b/resources/variants/cartesio_0.8.inst.cfg
index 4e4d5082e0..c8155f73fd 100644
--- a/resources/variants/cartesio_0.8.inst.cfg
+++ b/resources/variants/cartesio_0.8.inst.cfg
@@ -14,6 +14,7 @@ machine_nozzle_tip_outer_diameter = 1.05
 infill_line_width = 0.9
 
 wall_thickness = 2.4
+top_bottom_thickness = =0.8 if layer_height < 0.3 else (layer_height * 3)
 wall_0_inset = -0.05
 fill_perimeter_gaps = nowhere
 travel_compensate_overlapping_walls_enabled =