diff --git a/resources/definitions/fdmprinter.def.json b/resources/definitions/fdmprinter.def.json
index 8db02b67f8..6861189f85 100644
--- a/resources/definitions/fdmprinter.def.json
+++ b/resources/definitions/fdmprinter.def.json
@@ -1208,7 +1208,8 @@
                         }
                     }
                 },
-                "fill_perimeter_gaps": {
+                "fill_perimeter_gaps":
+                {
                     "label": "Fill Gaps Between Walls",
                     "description": "Fills the gaps between walls where no walls fit.",
                     "type": "enum",
@@ -1218,17 +1219,16 @@
                     },
                     "default_value": "everywhere",
                     "limit_to_extruder": "wall_0_extruder_nr",
-                    "settable_per_mesh": true,
-                    "children": {
-                        "filter_out_tiny_gaps": {
-                            "label": "Filter Out Tiny Gaps",
-                            "description": "Filter out tiny gaps to reduce blobs on outside of model.",
-                            "type": "bool",
-                            "default_value": true,
-                            "limit_to_extruder": "wall_0_extruder_nr",
-                            "settable_per_mesh": true
-                        }
-                    }
+                    "settable_per_mesh": true
+                },
+                "filter_out_tiny_gaps":
+                {
+                    "label": "Filter Out Tiny Gaps",
+                    "description": "Filter out tiny gaps to reduce blobs on outside of model.",
+                    "type": "bool",
+                    "default_value": true,
+                    "limit_to_extruder": "wall_0_extruder_nr",
+                    "settable_per_mesh": true
                 },
                 "fill_outline_gaps": {
                     "label": "Print Thin Walls",