diff --git a/resources/definitions/ultimaker.def.json b/resources/definitions/ultimaker.def.json
index 2abc3f1932..1546a268de 100644
--- a/resources/definitions/ultimaker.def.json
+++ b/resources/definitions/ultimaker.def.json
@@ -72,9 +72,6 @@
         "roofing_material_flow": {
             "value": "material_flow"
         },
-        "roofing_pattern": {
-            "value": "'zigzag'"
-        },
         "skin_material_flow": {
             "value": "0.95 * material_flow"
         },