diff --git a/resources/definitions/fdmprinter.def.json b/resources/definitions/fdmprinter.def.json
index 24f7efe373..17f8b6826f 100644
--- a/resources/definitions/fdmprinter.def.json
+++ b/resources/definitions/fdmprinter.def.json
@@ -1614,7 +1614,7 @@
                 "infill_overlap":
                 {
                     "label": "Infill Overlap Percentage",
-                    "description": "The amount of overlap between the infill and the walls. A slight overlap allows the walls to connect firmly to the infill.",
+                    "description": "The amount of overlap between the infill and the walls as a percentage of the infill line width. A slight overlap allows the walls to connect firmly to the infill.",
                     "unit": "%",
                     "type": "float",
                     "default_value": 10,
@@ -1635,7 +1635,7 @@
                             "default_value": 0.04,
                             "minimum_value_warning": "-0.5 * machine_nozzle_size",
                             "maximum_value_warning": "machine_nozzle_size",
-                            "value": "0.5 * ( infill_line_width + (wall_line_width_x if wall_line_count > 1 else wall_line_width_0) ) * infill_overlap / 100 if infill_sparse_density < 95 and infill_pattern != 'concentric' else 0",
+                            "value": "0.5 * (infill_line_width + (wall_line_width_x if wall_line_count > 1 else wall_line_width_0)) * infill_overlap / 100 if infill_sparse_density < 95 and infill_pattern != 'concentric' else 0",
                             "enabled": "infill_sparse_density > 0 and infill_pattern != 'concentric'",
                             "settable_per_mesh": true
                         }
@@ -1644,7 +1644,7 @@
                 "skin_overlap":
                 {
                     "label": "Skin Overlap Percentage",
-                    "description": "The amount of overlap between the skin and the walls as a percentage of the line width. A slight overlap allows the walls to connect firmly to the skin. This is a percentage of the average line widths of the skin lines and the innermost wall.",
+                    "description": "The amount of overlap between the skin and the walls as a percentage of the skin line width. A slight overlap allows the walls to connect firmly to the skin. This is a percentage of the average line widths of the skin lines and the innermost wall.",
                     "unit": "%",
                     "type": "float",
                     "default_value": 5,
@@ -1665,7 +1665,7 @@
                             "default_value": 0.02,
                             "minimum_value_warning": "-0.5 * machine_nozzle_size",
                             "maximum_value_warning": "machine_nozzle_size",
-                            "value": "0.5 * ( skin_line_width + (wall_line_width_x if wall_line_count > 1 else wall_line_width_0) ) * skin_overlap / 100 if top_bottom_pattern != 'concentric' else 0",
+                            "value": "0.5 * (skin_line_width + (wall_line_width_x if wall_line_count > 1 else wall_line_width_0)) * skin_overlap / 100 if top_bottom_pattern != 'concentric' else 0",
                             "enabled": "top_bottom_pattern != 'concentric'",
                             "settable_per_mesh": true
                         }