diff --git a/resources/definitions/fdmprinter.def.json b/resources/definitions/fdmprinter.def.json
index 9ff9b2fe0e..1c5d6d3e2c 100644
--- a/resources/definitions/fdmprinter.def.json
+++ b/resources/definitions/fdmprinter.def.json
@@ -603,7 +603,7 @@
                                     "description": "Width of a single wall line for all wall lines except the outermost one.",
                                     "unit": "mm",
                                     "minimum_value": "0.0001",
-                                    "minimum_value_warning": "0.1 * machine_nozzle_size",
+                                    "minimum_value_warning": "0.5 * machine_nozzle_size",
                                     "maximum_value_warning": "2 * machine_nozzle_size",
                                     "default_value": 0.4,
                                     "value":"wall_line_width",
@@ -677,7 +677,7 @@
                             "unit": "mm",
                             "default_value": 0.4,
                             "minimum_value": "0.0001",
-                            "minimum_value_warning": "0.2 * machine_nozzle_size",
+                            "minimum_value_warning": "0.4 * machine_nozzle_size",
                             "maximum_value_warning": "2 * machine_nozzle_size",
                             "type": "float",
                             "enabled": "extruderValue(support_interface_extruder_nr, 'support_interface_enable')",
@@ -2788,7 +2788,7 @@
                     "unit": "mm",
                     "type": "float",
                     "default_value": 3,
-                    "minimum_value_warning": "max(extruderValues('machine_nozzle_size')",
+                    "minimum_value_warning": "max(extruderValues('machine_nozzle_size'))",
                     "maximum_value_warning": "10",
                     "enabled": "resolveOrValue('adhesion_type') == 'skirt'",
                     "settable_per_mesh": false,