diff --git a/resources/extruders/hellbot_magna_2_230_dual_extruder_0.def.json b/resources/extruders/hellbot_magna_2_230_dual_extruder_0.def.json
index f05c1d914c..f2b2613574 100644
--- a/resources/extruders/hellbot_magna_2_230_dual_extruder_0.def.json
+++ b/resources/extruders/hellbot_magna_2_230_dual_extruder_0.def.json
@@ -13,7 +13,7 @@
             "maximum_value": "1"
         },
         "machine_nozzle_size": { "default_value": 0.4 },
-        "material_diameter": { "default_value": 1.75 ,
+        "material_diameter": { "default_value": 1.75 },
 	"machine_extruder_start_code": {
             "default_value": "T0 \nG92 E0 \nG1 F1000 E100 \nG92 E0 \nM104 S{material_print_temperature}"
         },