diff --git a/resources/definitions/deltacomb.def.json b/resources/definitions/deltacomb.def.json
old mode 100644
new mode 100755
index a4b2d47a7b..0c4cec3674
--- a/resources/definitions/deltacomb.def.json
+++ b/resources/definitions/deltacomb.def.json
@@ -33,6 +33,7 @@
         "material_final_print_temperature":      { "value": "material_print_temperature - 5" },
         "material_initial_print_temperature":    { "value": "material_print_temperature" },
         "material_print_temperature_layer_0":    { "value": "material_print_temperature + 5" },
+        "material_diameter":                     { "default_value": 1.75 },
         "travel_avoid_distance":                 { "default_value": 1, "value": "1" },
         "speed_print" :                          { "default_value": 70 },
         "speed_travel":                          { "value": "150.0" },
@@ -55,6 +56,7 @@
         "support_use_towers" :                   { "default_value": false },
         "jerk_wall_0" :                          { "value": "30" },
         "jerk_travel" :                          { "default_value": 20 },
-        "acceleration_travel" :                  { "value": 10000 }
+        "acceleration_travel" :                  { "value": 10000 },
+        "machine_max_feedrate_z" :               { "default_value": 150 }
     }
 }
diff --git a/resources/extruders/deltacomb_extruder_0.def.json b/resources/extruders/deltacomb_extruder_0.def.json
old mode 100644
new mode 100755
index 046becfd82..35ed340bc0
--- a/resources/extruders/deltacomb_extruder_0.def.json
+++ b/resources/extruders/deltacomb_extruder_0.def.json
@@ -10,7 +10,6 @@
 
     "overrides": {
         "extruder_nr": { "default_value": 0 },
-        "machine_nozzle_size": { "default_value": 0.4 },
-        "material_diameter": { "default_value": 1.75 }
+        "machine_nozzle_size": { "default_value": 0.4 }
     }
 }