diff --git a/resources/definitions/longer_lk4x.def.json b/resources/definitions/longer_lk4x.def.json
index 236b8c24dd..b98dbeca06 100644
--- a/resources/definitions/longer_lk4x.def.json
+++ b/resources/definitions/longer_lk4x.def.json
@@ -30,7 +30,7 @@
         "machine_height": { "default_value": 250 },
         "machine_name": { "default_value": "LONGER LK4 X" },
         "machine_width": { "default_value": 220 },
-        "speed_travel": { "value": 65 }
+        "speed_travel": { "value": 65 },
         "retraction_amount": { "value": 2.0 },
         "z_seam_type": { "value": "'shortest'" },
         "retraction_combing": { "value": "'noskin'" }