diff --git a/resources/definitions/fdmprinter.def.json b/resources/definitions/fdmprinter.def.json
index 6fe5206cae..aafc01f219 100644
--- a/resources/definitions/fdmprinter.def.json
+++ b/resources/definitions/fdmprinter.def.json
@@ -412,34 +412,6 @@
                     "settable_per_meshgroup": false
                 },
                 "machine_head_with_fans_polygon":
-                {
-                    "label": "Machine Head Polygon",
-                    "description": "A 2D silhouette of the print head (fan caps excluded).",
-                    "type": "polygon",
-                    "default_value":
-                    [
-                        [
-                            -1,
-                            1
-                        ],
-                        [
-                            -1,
-                            -1
-                        ],
-                        [
-                            1,
-                            -1
-                        ],
-                        [
-                            1,
-                            1
-                        ]
-                    ],
-                    "settable_per_mesh": false,
-                    "settable_per_extruder": false,
-                    "settable_per_meshgroup": false
-                },
-                "machine_head_with_fans_polygon":
                 {
                     "label": "Machine Head & Fan Polygon",
                     "description": "A 2D silhouette of the print head (fan caps included).",