diff --git a/resources/definitions/fdmprinter.def.json b/resources/definitions/fdmprinter.def.json
index 6c86ce9912..f5e86b18e1 100755
--- a/resources/definitions/fdmprinter.def.json
+++ b/resources/definitions/fdmprinter.def.json
@@ -1340,7 +1340,7 @@
                 "skin_overlap":
                 {
                     "label": "Skin Overlap Percentage",
-                    "description": "The amount of overlap between the skin and the walls. A slight overlap allows the walls to connect firmly to the skin.",
+                    "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.",
                     "unit": "%",
                     "type": "float",
                     "default_value": 5,