diff --git a/resources/machines/ultimaker2_olsson.json b/resources/machines/ultimaker2_olsson.json
index 3a872caa2f..83302bdcaf 100644
--- a/resources/machines/ultimaker2_olsson.json
+++ b/resources/machines/ultimaker2_olsson.json
@@ -14,6 +14,7 @@
         "machine_show_variants": { "default": true },
         "machine_nozzle_head_distance": { "default": 5 },
         "machine_nozzle_expansion_angle": { "default": 45 },
-        "machine_height": { "default": 203 }
+        "machine_height": { "default": 203 },
+        "machine_heat_zone_length": { "default": 16 }
     }
 }
diff --git a/resources/machines/ultimaker2plus.json b/resources/machines/ultimaker2plus.json
index 0fa4147427..1ff47211be 100644
--- a/resources/machines/ultimaker2plus.json
+++ b/resources/machines/ultimaker2plus.json
@@ -18,6 +18,7 @@
         "gantry_height": { "default": 50 },
         "machine_nozzle_head_distance": { "default": 5 },
         "machine_nozzle_expansion_angle": { "default": 45 },
+        "machine_heat_zone_length": { "default": 16 },
         "machine_head_with_fans_polygon":
         {
             "default": [