diff --git a/resources/definitions/ultimaker3.def.json b/resources/definitions/ultimaker3.def.json
index f3783ac2e2..fe5a9153e5 100644
--- a/resources/definitions/ultimaker3.def.json
+++ b/resources/definitions/ultimaker3.def.json
@@ -59,8 +59,8 @@
         "machine_disallowed_areas": { "default_value": [
             [[92.8, -53.4], [92.8, -97.5], [116.5, -97.5], [116.5, -53.4]],
             [[73.8, 107.5], [73.8, 100.5], [116.5, 100.5], [116.5, 107.5]],
-            [[92.6, 107.5], [92.6, 100.5], [116.5, 100.5], [116.5, 107.5]],
-            [[92.9, -97.5], [92.9, -107.5], [116.5, -107.5], [116.5, -97.5]]
+            [[74.6, 107.5], [74.6, 100.5], [116.5, 100.5], [116.5, 107.5]],
+            [[74.9, -97.5], [74.9, -107.5], [116.5, -107.5], [116.5, -97.5]]
         ]},
         "nozzle_disallowed_areas": { "default_value": [
             [[-116.5, -103.5], [-116.5, -107.5], [-100.9, -107.5], [-100.9, -103.5]],