diff --git a/resources/definitions/fdmprinter.def.json b/resources/definitions/fdmprinter.def.json
index c8d97a392b..0eff9e470f 100755
--- a/resources/definitions/fdmprinter.def.json
+++ b/resources/definitions/fdmprinter.def.json
@@ -633,7 +633,7 @@
                     "unit": "mm",
                     "type": "float",
                     "default_value": 0.3,
-                    "resolve": "sum(extruderValues('layer_height_0')) / len(extruderValues('layer_height_0'))",
+                    "resolve": "min(extruderValues('layer_height_0'))",
                     "minimum_value": "0.001",
                     "minimum_value_warning": "0.1",
                     "maximum_value_warning": "0.8 * min(extruderValues('machine_nozzle_size'))",