diff --git a/resources/definitions/fdmprinter.def.json b/resources/definitions/fdmprinter.def.json
index ce406dc923..a219347f10 100644
--- a/resources/definitions/fdmprinter.def.json
+++ b/resources/definitions/fdmprinter.def.json
@@ -3310,6 +3310,8 @@
                     "default_value": 200,
                     "minimum_value_warning": "-1000",
                     "maximum_value_warning": "1000",
+                    "maximum_value": "machine_width - 0.5 * prime_tower_size",
+                    "minimum_value": "0.5 * prime_tower_size",
                     "settable_per_mesh": false,
                     "settable_per_extruder": false
                 },
@@ -3323,6 +3325,8 @@
                     "default_value": 200,
                     "minimum_value_warning": "-1000",
                     "maximum_value_warning": "1000",
+                    "maximum_value": "machine_depth - 0.5 * prime_tower_size",
+                    "minimum_value": "0.5 * prime_tower_size",
                     "settable_per_mesh": false,
                     "settable_per_extruder": false
                 },