diff --git a/resources/definitions/fdmprinter.def.json b/resources/definitions/fdmprinter.def.json
index 176c41dce7..14d7e7f39e 100644
--- a/resources/definitions/fdmprinter.def.json
+++ b/resources/definitions/fdmprinter.def.json
@@ -3720,7 +3720,7 @@
                     "settable_per_extruder": true,
                     "children":
                     {
-                        "support_tree_wall_line_count":
+                        "support_tree_wall_count":
                         {
                             "label": "Tree Support Wall Line Count",
                             "description": "The number of walls of the branches of tree support. Thicker walls take longer to print but don't fall over as easily.",