diff --git a/resources/definitions/ultimaker.def.json b/resources/definitions/ultimaker.def.json
index bb4a074fac..a744096098 100644
--- a/resources/definitions/ultimaker.def.json
+++ b/resources/definitions/ultimaker.def.json
@@ -126,6 +126,7 @@
         "wall_x_material_flow_layer_0": { "value": "0.95 * material_flow_layer_0" },
         "xy_offset": { "value": "-layer_height * 0.1" },
         "xy_offset_layer_0": { "value": "-wall_line_width_0 / 5 + xy_offset" },
+        "z_seam_corner": { "value": "'z_seam_corner_none'" },
         "zig_zaggify_support": { "value": true }
     }
 }
\ No newline at end of file