diff --git a/resources/definitions/fdmprinter.def.json b/resources/definitions/fdmprinter.def.json
index 13716be9ba..e13f3e6f8b 100644
--- a/resources/definitions/fdmprinter.def.json
+++ b/resources/definitions/fdmprinter.def.json
@@ -5860,6 +5860,7 @@
                     "description": "Ignore the internal geometry arising from overlapping volumes within a mesh and print the volumes as one. This may cause unintended internal cavities to disappear.",
                     "type": "bool",
                     "default_value": true,
+                    "value": "magic_mesh_surface_mode != 'surface'",
                     "settable_per_mesh": true
                 },
                 "meshfix_union_all_remove_holes":