diff --git a/resources/definitions/fdmprinter.def.json b/resources/definitions/fdmprinter.def.json
index 8760d2e9d7..0df057453f 100644
--- a/resources/definitions/fdmprinter.def.json
+++ b/resources/definitions/fdmprinter.def.json
@@ -4995,7 +4995,7 @@
                     "default_value": 10,
                     "value": "8.48 if prime_tower_circular else 10",
                     "minimum_value": "0",
-                    "maximum_value_warning": "(resolveOrValue('prime_tower_size') * 0.5) ** 2 * 3.14159 * resolveOrValue('layer_height') if prime_tower_circular else resolveOrValue('prime_tower_size') ** 2 * resolveOrValue('layer_height')",
+                    "maximum_value_warning": "((resolveOrValue('prime_tower_size') * 0.5) ** 2 * 3.14159 * resolveOrValue('layer_height') if prime_tower_circular else resolveOrValue('prime_tower_size') ** 2 * resolveOrValue('layer_height')) - sum(extruderValues('prime_tower_min_volume')) + prime_tower_min_volume",
                     "enabled": "resolveOrValue('prime_tower_enable')",
                     "settable_per_mesh": false,
                     "settable_per_extruder": true