diff --git a/resources/definitions/fdmprinter.def.json b/resources/definitions/fdmprinter.def.json
index edac6a8dae..b19c97b793 100644
--- a/resources/definitions/fdmprinter.def.json
+++ b/resources/definitions/fdmprinter.def.json
@@ -219,8 +219,11 @@
                 {
                     "label": "Nozzle angle",
                     "description": "The angle between the horizontal plane and the conical part right above the tip of the nozzle.",
-                    "default_value": 45,
+                    "unit": "°",
                     "type": "int",
+                    "default_value": 45,
+                    "maximum_value": 89,
+                    "minimum_value": 1,
                     "settable_per_mesh": false,
                     "settable_per_extruder": false,
                     "settable_per_meshgroup": false