diff --git a/resources/definitions/ultimaker_method_base.def.json b/resources/definitions/ultimaker_method_base.def.json
index ff2f9fc2218..1e5eb952ed0 100644
--- a/resources/definitions/ultimaker_method_base.def.json
+++ b/resources/definitions/ultimaker_method_base.def.json
@@ -142,7 +142,11 @@
             "value": "min(extruderValues('extruder_nr'))"
         },
         "adhesion_type": { "value": "'raft'" },
-        "bottom_thickness": { "value": "top_bottom_thickness" },
+        "bottom_thickness":
+        {
+            "minimum_value_warning": 0.3,
+            "value": "top_bottom_thickness"
+        },
         "bridge_enable_more_layers": { "value": true },
         "bridge_fan_speed_2": { "value": "(cool_fan_speed_max + cool_fan_speed_min) / 2" },
         "bridge_skin_density": { "value": 100 },
@@ -576,7 +580,11 @@
             "minimum_value_warning": 0.3,
             "value": "4*layer_height"
         },
-        "top_thickness": { "value": "top_bottom_thickness * 1.5" },
+        "top_thickness":
+        {
+            "minimum_value_warning": 0.3,
+            "value": "top_bottom_thickness * 1.5"
+        },
         "travel_avoid_distance": { "value": "3 if extruders_enabled_count > 1 else machine_nozzle_tip_outer_diameter / 2 * 1.5" },
         "travel_avoid_other_parts": { "value": false },
         "wall_0_inset": { "value": 0 },
diff --git a/resources/quality/ultimaker_method/um_method_labs_basf-ultrafuse-316l-175_0.15mm.inst.cfg b/resources/quality/ultimaker_method/um_method_labs_basf-ultrafuse-316l-175_0.15mm.inst.cfg
index 11a738ba810..74b11bcb643 100644
--- a/resources/quality/ultimaker_method/um_method_labs_basf-ultrafuse-316l-175_0.15mm.inst.cfg
+++ b/resources/quality/ultimaker_method/um_method_labs_basf-ultrafuse-316l-175_0.15mm.inst.cfg
@@ -32,7 +32,7 @@ skin_overlap = 20.0
 skirt_brim_minimal_length = 100.0
 speed_print = 25
 support_enable = False
-top_bottom_thickness = =layer_height * 2
+top_bottom_thickness = =math.floor(layer_height * 2000)/1000.0
 top_thickness = =top_bottom_thickness
 wall_0_material_flow_layer_0 = 110
 wall_x_material_flow_layer_0 = 110
diff --git a/resources/quality/ultimaker_methodx/um_methodx_labs_basf-ultrafuse-316l-175_0.15mm.inst.cfg b/resources/quality/ultimaker_methodx/um_methodx_labs_basf-ultrafuse-316l-175_0.15mm.inst.cfg
index f4d07747513..8fd51cbe460 100644
--- a/resources/quality/ultimaker_methodx/um_methodx_labs_basf-ultrafuse-316l-175_0.15mm.inst.cfg
+++ b/resources/quality/ultimaker_methodx/um_methodx_labs_basf-ultrafuse-316l-175_0.15mm.inst.cfg
@@ -32,7 +32,7 @@ skin_overlap = 20.0
 skirt_brim_minimal_length = 100.0
 speed_print = 25
 support_enable = False
-top_bottom_thickness = =layer_height * 2
+top_bottom_thickness = =math.floor(layer_height * 2000)/1000.0
 top_thickness = =top_bottom_thickness
 wall_0_material_flow_layer_0 = 110
 wall_x_material_flow_layer_0 = 110