diff --git a/resources/definitions/alfawise_u20.def.json b/resources/definitions/alfawise_u20.def.json
index abc206c4d2..87726fec3d 100644
--- a/resources/definitions/alfawise_u20.def.json
+++ b/resources/definitions/alfawise_u20.def.json
@@ -83,7 +83,7 @@
         "support_enable": {
             "default_value": true
         },
-                "retraction_enable": {
+        "retraction_enable": {
             "default_value": true
         },
         "retraction_amount": {