diff --git a/resources/definitions/printrbot_simple.def.json b/resources/definitions/printrbot_simple.def.json
index 5950055a76..0116ba6244 100644
--- a/resources/definitions/printrbot_simple.def.json
+++ b/resources/definitions/printrbot_simple.def.json
@@ -22,10 +22,10 @@
         "machine_nozzle_cool_down_speed": { "default_value": 2 },
         "machine_head_with_fans_polygon": {
             "default_value": [
-                [ -55, 20 ],
-                [ -55, -99999 ],
-                [ 49, -99999 ],
-                [ 49, 20 ]
+                [ 55, -20 ],
+                [ 55, 99999 ],
+                [ -49, 99999 ],
+                [ -49, -20 ]
             ]
         },
         "gantry_height": { "default_value": 99999 },