diff --git a/resources/definitions/atom2.def.json b/resources/definitions/atom2.def.json
index 8fbbe2c698..d7a26546d8 100644
--- a/resources/definitions/atom2.def.json
+++ b/resources/definitions/atom2.def.json
@@ -30,34 +30,6 @@
     "speed_print": { "default_value": 32 },
     "optimize_wall_printing_order": { "value": "True" },
     "infill_sparse_density": { "default_value": 10 },
-    "brim_width":
-    {
-      "label": "Brim Width",
-      "description": "The distance from the model to the outermost brim line. A larger brim enhances adhesion to the build plate, but also reduces the effective print area.",
-      "type": "float",
-      "unit": "mm",
-      "default_value": 4,
-      "minimum_value": "0.0",
-      "maximum_value_warning": "50.0",
-      "maximum_value": "0.5 * min(machine_width, machine_depth)",
-      "enabled": "resolveOrValue('adhesion_type') == 'brim' or resolveOrValue('prime_tower_brim_enable')",
-      "settable_per_mesh": false,
-      "children":
-      {
-        "brim_line_count":
-        {
-          "label": "Brim Line Count",
-          "description": "The number of lines used for a brim. More brim lines enhance adhesion to the build plate, but also reduces the effective print area.",
-          "type": "int",
-          "default_value": 10,
-          "minimum_value": "0",
-          "maximum_value_warning": "50 / skirt_brim_line_width",
-          "maximum_value": "0.5 * min(machine_width, machine_depth) / skirt_brim_line_width",
-          "value": 10,
-          "enabled": "resolveOrValue('adhesion_type') == 'brim' or resolveOrValue('prime_tower_brim_enable')",
-          "settable_per_mesh": false
-        }
-      }
-    }
+    "brim_width": { "default_value": 4 }
   }
-}
\ No newline at end of file
+}