diff --git a/resources/extruders/dagoma_sigma_extruder.def.json b/resources/extruders/dagoma_sigma_extruder.def.json
index 872daf254a..098e2a2b07 100644
--- a/resources/extruders/dagoma_sigma_extruder.def.json
+++ b/resources/extruders/dagoma_sigma_extruder.def.json
@@ -11,6 +11,9 @@
         "extruder_nr": {
             "default_value": 0
         },
+        "machine_nozzle_size": {
+            "default_value": 0.4
+        },
         "material_diameter": {
             "default_value": 1.75
         }