diff --git a/resources/definitions/fdmprinter.def.json b/resources/definitions/fdmprinter.def.json
index 54e0d60b02..e2f37e5968 100644
--- a/resources/definitions/fdmprinter.def.json
+++ b/resources/definitions/fdmprinter.def.json
@@ -5606,8 +5606,7 @@
                             "label": "Skirt/Brim Extruder",
                             "description": "The extruder train to use for printing the skirt or brim. This is used in multi-extrusion.",
                             "type": "optional_extruder",
-                            "default_value": "0",
-                            "value": "adhesion_extruder_nr",
+                            "default_value": "-1",
                             "enabled": "extruders_enabled_count > 1 and (resolveOrValue('adhesion_type') == 'skirt' or resolveOrValue('adhesion_type') == 'brim' or resolveOrValue('prime_tower_brim_enable'))",
                             "resolve": "'-1' if '-1' in extruderValues('skirt_brim_extruder_nr') else adhesion_extruder_nr",
                             "settable_per_mesh": false,
@@ -5767,7 +5766,7 @@
                     "description": "If brim is only on outside then parts fully enclosed inside another part will get a brim which might overlap with the internal holes of the outer part. This setting controls how far to stay away from those internal holes. Set to a high value to prevent any brim from being generated for parts enclosed within the holes of other parts.",
                     "unit": "mm",
                     "type": "float",
-                    "default_value": 5,
+                    "value": "2.5",
                     "minimum_value": "0",
                     "enabled": "resolveOrValue('adhesion_type') == 'brim' and any(extruderValues('brim_outside_only'))",
                     "limit_to_extruder": "skirt_brim_extruder_nr",
@@ -6350,7 +6349,7 @@
                     "description": "Prime-towers might need the extra adhesion afforded by a brim even if the model doesn't. Presently can't be used with the 'Raft' adhesion-type.",
                     "type": "bool",
                     "enabled": "resolveOrValue('prime_tower_enable') and (resolveOrValue('adhesion_type') != 'raft')",
-                    "resolve": "resolveOrValue('prime_tower_enable') and (resolveOrValue('adhesion_type') in ('none', 'skirt'))",
+                    "resolve": "resolveOrValue('prime_tower_enable') and (resolveOrValue('adhesion_type') in ('none', 'skirt', 'brim'))",
                     "default_value": false,
                     "settable_per_mesh": false,
                     "settable_per_extruder": false