diff --git a/resources/definitions/fdmprinter.def.json b/resources/definitions/fdmprinter.def.json
index bc4b8dbc40..1f7ed7c78a 100644
--- a/resources/definitions/fdmprinter.def.json
+++ b/resources/definitions/fdmprinter.def.json
@@ -351,6 +351,7 @@
                     "default_value": 0.4,
                     "type": "float",
                     "value": "machine_nozzle_size",
+                    "settable_per_mesh": true,
                     "children":
                     {
                         "wall_line_width":