diff --git a/resources/definitions/fdmprinter.def.json b/resources/definitions/fdmprinter.def.json
index 17add697a5..147f966a94 100755
--- a/resources/definitions/fdmprinter.def.json
+++ b/resources/definitions/fdmprinter.def.json
@@ -3898,7 +3898,7 @@
                             "value": "round(max(2 * min(extruderValues('prime_tower_line_width')), 0.5 * (resolveOrValue('prime_tower_size') - math.sqrt(max(0, resolveOrValue('prime_tower_size') ** 2 - max(extruderValues('prime_tower_min_volume')) / resolveOrValue('layer_height'))))), 3)",
                             "resolve": "max(extruderValues('prime_tower_wall_thickness'))",
                             "minimum_value": "0.001",
-                            "minimum_value_warning": "2 * min(extruderValues('prime_tower_line_width'))",
+                            "minimum_value_warning": "2 * min(extruderValues('prime_tower_line_width')) - 0.0001",
                             "maximum_value_warning": "resolveOrValue('prime_tower_size') / 2",
                             "enabled": "resolveOrValue('prime_tower_enable')",
                             "settable_per_mesh": false,