diff --git a/resources/definitions/ultimaker.def.json b/resources/definitions/ultimaker.def.json
index 571ffbc4af..7df65f8b83 100644
--- a/resources/definitions/ultimaker.def.json
+++ b/resources/definitions/ultimaker.def.json
@@ -218,7 +218,7 @@
             "value": "'zigzag'"
         },
         "support_wall_count": {
-            "value": 0
+            "value": "1 if support_structure == 'tree' else 0"
         },
         "zig_zaggify_support": {
             "value": true
@@ -227,7 +227,7 @@
             "value": true
         },
         "support_infill_rate": {
-            "value": "0 if support_enable and support_structure == 'tree' else (80 if support_interface_enable else 15)"
+            "value": "80 if support_interface_enable else 15"
         },
         "gradual_support_infill_steps": {
             "value": "2 if support_interface_enable else 0"