diff --git a/plugins/VersionUpgrade/VersionUpgrade44to45/VersionUpgrade44to45.py b/plugins/VersionUpgrade/VersionUpgrade44to45/VersionUpgrade44to45.py
index 35861c9486..3ae25e05ae 100644
--- a/plugins/VersionUpgrade/VersionUpgrade44to45/VersionUpgrade44to45.py
+++ b/plugins/VersionUpgrade/VersionUpgrade44to45/VersionUpgrade44to45.py
@@ -11,6 +11,10 @@ _merged_settings = {
     "support_wall_count": "support_tree_wall_count"
 }
 
+_removed_settings = {
+    "support_tree_wall_thickness"
+}
+
 class VersionUpgrade44to45(VersionUpgrade):
     def getCfgVersion(self, serialised: str) -> int:
         parser = configparser.ConfigParser(interpolation = None)
@@ -55,6 +59,10 @@ class VersionUpgrade44to45(VersionUpgrade):
                         parser["values"][preferred] = parser["values"][removed]
                     del parser["values"][removed]
 
+            for removed in _removed_settings:
+                if removed in parser["values"]:
+                    del parser["values"][removed]
+
         result = io.StringIO()
         parser.write(result)
         return [filename], [result.getvalue()]
diff --git a/resources/definitions/fdmprinter.def.json b/resources/definitions/fdmprinter.def.json
index 117ee0e5ad..693ae142f6 100644
--- a/resources/definitions/fdmprinter.def.json
+++ b/resources/definitions/fdmprinter.def.json
@@ -6185,21 +6185,6 @@
                     "settable_per_mesh": false,
                     "settable_per_extruder": true
                 },
-                "support_tree_wall_thickness":
-                {
-                    "label": "Tree Support Wall Thickness",
-                    "description": "The thickness of the walls of the branches of tree support. Thicker walls take longer to print but don't fall over as easily.",
-                    "unit": "mm",
-                    "type": "float",
-                    "minimum_value": "0",
-                    "minimum_value_warning": "wall_line_width",
-                    "default_value": 0.8,
-                    "value": "support_line_width",
-                    "limit_to_extruder": "support_infill_extruder_nr",
-                    "enabled": "support_tree_enable",
-                    "settable_per_mesh": false,
-                    "settable_per_extruder": true
-                },
                 "slicing_tolerance":
                 {
                     "label": "Slicing Tolerance",