diff --git a/resources/definitions/fdmprinter.def.json b/resources/definitions/fdmprinter.def.json
index dca63aaa5e..a38cfc8852 100644
--- a/resources/definitions/fdmprinter.def.json
+++ b/resources/definitions/fdmprinter.def.json
@@ -1519,6 +1519,16 @@
                     "limit_to_extruder": "top_bottom_extruder_nr",
                     "settable_per_mesh": true
                 },
+                "skin_monotonic":
+                {
+                    "label": "Monotonic Top/Bottom Order",
+                    "description": "Print top/bottom lines in an ordering that causes them to always overlap with adjacent lines in a single direction. This takes slightly more time to print, but makes flat surfaces look more consistent.",
+                    "type": "bool",
+                    "default_value": false,
+                    "enabled": "(top_layers > 0 or bottom_layers > 0) and (top_bottom_pattern != 'concentric' or top_bottom_pattern_0 != 'concentric')",
+                    "limit_to_extruder": "top_bottom_extruder_nr",
+                    "settable_per_mesh": true
+                },
                 "skin_angles":
                 {
                     "label": "Top/Bottom Line Directions",
@@ -1586,6 +1596,16 @@
                     "limit_to_extruder": "top_bottom_extruder_nr",
                     "settable_per_mesh": true
                 },
+                "ironing_monotonic":
+                {
+                    "label": "Monotonic Ironing Order",
+                    "description": "Print ironing lines in an ordering that causes them to always overlap with adjacent lines in a single direction. This takes slightly more time to print, but makes flat surfaces look more consistent.",
+                    "type": "bool",
+                    "default_value": false,
+                    "enabled": "ironing_enabled and ironing_pattern != 'concentric'",
+                    "limit_to_extruder": "top_bottom_extruder_nr",
+                    "settable_per_mesh": true
+                },
                 "ironing_line_spacing":
                 {
                     "label": "Ironing Line Spacing",
@@ -6385,6 +6405,17 @@
                     "settable_per_mesh": true,
                     "enabled": "roofing_layer_count > 0 and top_layers > 0"
                 },
+                "roofing_monotonic":
+                {
+                    "label": "Monotonic Top Surface Order",
+                    "description": "Print top surface lines in an ordering that causes them to always overlap with adjacent lines in a single direction. This takes slightly more time to print, but makes flat surfaces look more consistent.",
+                    "type": "bool",
+                    "default_value": false,
+                    "value": "skin_monotonic",
+                    "enabled": "roofing_layer_count > 0 and top_layers > 0 and roofing_pattern != 'concentric'",
+                    "limit_to_extruder": "roofing_extruder_nr",
+                    "settable_per_mesh": true
+                },
                 "roofing_angles":
                 {
                     "label": "Top Surface Skin Line Directions",