diff --git a/resources/definitions/fdmprinter.def.json b/resources/definitions/fdmprinter.def.json
index d9fe2a72e0..46b3b125a4 100755
--- a/resources/definitions/fdmprinter.def.json
+++ b/resources/definitions/fdmprinter.def.json
@@ -4587,18 +4587,15 @@
                     "type": "bool",
                     "default_value": false,
                     "settable_per_mesh": false,
-                    "settable_per_extruder": false,
-                    "children":
-                    {
-                        "smooth_spiralized_contours":
-                        {
-                            "label": "Smooth Spiralized Contours",
-                            "description": "Smooth the spiralized contours to reduce the visibility of the Z seam (the Z-seam should be barely visible on the print but will still be visible in the layer view). Note that smoothing will tend to blur fine surface details.",
-                            "type": "bool",
-                            "default_value": true,
-                            "enabled": "magic_spiralize"
-                        }
-                    }
+                    "settable_per_extruder": false
+                },
+                "smooth_spiralized_contours":
+                {
+                    "label": "Smooth Spiralized Contours",
+                    "description": "Smooth the spiralized contours to reduce the visibility of the Z seam (the Z-seam should be barely visible on the print but will still be visible in the layer view). Note that smoothing will tend to blur fine surface details.",
+                    "type": "bool",
+                    "default_value": true,
+                    "enabled": "magic_spiralize"
                 }
             }
         },