diff --git a/resources/definitions/vertex_delta_k8800.def.json b/resources/definitions/vertex_delta_k8800.def.json
index b832620942..ddfa54f4c8 100644
--- a/resources/definitions/vertex_delta_k8800.def.json
+++ b/resources/definitions/vertex_delta_k8800.def.json
@@ -10,6 +10,9 @@
     "author": "Velleman"
   },
   "overrides": {
+    "material_diameter": {
+      "default_value": 1.75,
+    },
     "machine_width": {
       "default_value": 200
     },
@@ -40,7 +43,7 @@
     "machine_head_shape_max_y": {
       "default_value": 0
     },
-    "machine_nozzle_gantry_distance": {
+    "gantry_height": {
       "default_value": 0
     },
     "machine_nozzle_offset_x_1": {