diff --git a/resources/definitions/ultimaker.def.json b/resources/definitions/ultimaker.def.json
index 14c7f6d0e04..65ceaf6f0fb 100644
--- a/resources/definitions/ultimaker.def.json
+++ b/resources/definitions/ultimaker.def.json
@@ -42,6 +42,7 @@
         "cool_min_layer_time_fan_speed_max": { "value": "cool_min_layer_time + 5" },
         "cool_min_speed": { "value": "round(speed_wall_0 * 3 / 4) if cool_lift_head else round(speed_wall_0 / 5)" },
         "cool_min_temperature": { "value": "max([material_final_print_temperature, material_initial_print_temperature, material_print_temperature - 15])" },
+        "extra_infill_lines_to_support_skins": { "value": "'none'" },
         "gradual_support_infill_step_height": { "value": "4 * layer_height" },
         "gradual_support_infill_steps": { "value": "2 if support_interface_enable and support_structure != 'tree' else 0" },
         "infill_material_flow": { "value": "(1.95-infill_sparse_density / 100 if infill_sparse_density > 95 else 1) * material_flow" },
@@ -109,6 +110,7 @@
         "roofing_layer_count": { "value": "1" },
         "roofing_material_flow": { "value": "material_flow" },
         "skin_angles": { "value": "[] if infill_pattern not in ['cross', 'cross_3d'] else [20, 110]" },
+        "skin_edge_support_thickness": { "value": "4 * layer_height if infill_sparse_density < 30 else 0" },
         "skin_material_flow": { "value": "0.95 * material_flow" },
         "skin_material_flow_layer_0": { "value": "95" },
         "skin_monotonic": { "value": "roofing_layer_count == 0" },