diff --git a/resources/definitions/erzay3d.def.json b/resources/definitions/erzay3d.def.json
index 1fe777091f..9258a22f0c 100644
--- a/resources/definitions/erzay3d.def.json
+++ b/resources/definitions/erzay3d.def.json
@@ -70,7 +70,7 @@
     "jerk_print": { "default_value": 10 },
 
     "support_angle": { "default_value": 65 },
-    "support_brim_enable": { "default_value": true },
+    "support_brim_enable": { "value": true },
 
     "adhesion_type": { "default_value": "skirt" },
     "brim_outside_only": { "default_value": false },
diff --git a/resources/definitions/fdmprinter.def.json b/resources/definitions/fdmprinter.def.json
index ca9045126b..2623dff181 100644
--- a/resources/definitions/fdmprinter.def.json
+++ b/resources/definitions/fdmprinter.def.json
@@ -4413,6 +4413,7 @@
                     "description": "Generate a brim within the support infill regions of the first layer. This brim is printed underneath the support, not around it. Enabling this setting increases the adhesion of support to the build plate.",
                     "type": "bool",
                     "default_value": false,
+                    "value": "support_structure == 'tree'",
                     "enabled": "support_enable or support_meshes_present",
                     "limit_to_extruder": "support_infill_extruder_nr",
                     "settable_per_mesh": false,