diff --git a/resources/definitions/fdmprinter.def.json b/resources/definitions/fdmprinter.def.json
index b6391cb19c..a951d6aca6 100755
--- a/resources/definitions/fdmprinter.def.json
+++ b/resources/definitions/fdmprinter.def.json
@@ -4137,7 +4137,8 @@
                     "description": "The angle of overhang of the outer walls created for the mold. 0° will make the outer shell of the mold vertical, while 90° will make the outside of the model follow the contour of the model.",
                     "unit": "°",
                     "type": "float",
-                    "minimum_value": "0",
+                    "minimum_value": "-89",
+                    "minimum_value_warning": "0",
                     "maximum_value_warning": "support_angle",
                     "maximum_value": "90",
                     "default_value": 40,