diff --git a/resources/definitions/ultimaker.def.json b/resources/definitions/ultimaker.def.json
index cbc8dd5a1c..c3dc2e0e2c 100644
--- a/resources/definitions/ultimaker.def.json
+++ b/resources/definitions/ultimaker.def.json
@@ -37,6 +37,11 @@
         "bridge_wall_material_flow": { "value": "wall_material_flow" },
         "bridge_wall_speed": { "value": "bridge_skin_speed" },
         "cool_fan_speed_0": { "value": "cool_fan_speed_min" },
+        "cool_fan_speed_max": { "value": "100" },
+        "cool_min_layer_time": { "value": 6 },
+        "cool_min_layer_time_fan_speed_max": { "value": "cool_min_layer_time + 5" },
+        "cool_min_speed": { "value": "speed_wall_0 * 3 / 4 if lift_head else speed_wall_0 / 5" },
+        "cool_min_temperature": { "value":  "material_print_temperature - 15" },
         "gradual_support_infill_step_height": { "value": "4 * layer_height" },
         "gradual_support_infill_steps": { "value": "2 if support_interface_enable else 0" },
         "infill_material_flow": { "value": "(1.95-infill_sparse_density / 100 if infill_sparse_density > 95 else 1) * material_flow" },