diff --git a/software/osie-coupler/instance-input-schema.json b/software/osie-coupler/instance-input-schema.json
index 25d22584c803c176a2d6e6fdcbb626488ac214fe..5cef2cfea9fc6388e71be9b668bad23c29199641 100644
--- a/software/osie-coupler/instance-input-schema.json
+++ b/software/osie-coupler/instance-input-schema.json
@@ -3,78 +3,65 @@
   "description": "Parameters to instantiate coupler",
   "type": "object",
   "configuration": {
-
-  "coupler_block_device": {
+    "coupler_block_device": {
       "description": "The Linux block device using I2C protocol,",
       "type": "string",
       "default": "/dev/i2c-1"
     },
-
-  "coupler_i2c_slave_list": {
+    "coupler_i2c_slave_list": {
       "description": "The list of comma separated addresses of I2C enabled devices on the I2C bus.",
       "type": "string",
       "default": "0x58"
     },
-
-  "opc_ua_port": {
+    "opc_ua_port": {
       "description": "The OPC UA server bind to bind to.",
       "type": "integer",
       "default": 4840
-  },
-
-  "mode": {
-      "description": "The operationg mode of the coupler. By default 0 - i.e. control for real I2C devices attached. If 1 selected emulate them (useful for testing). ",
+    },
+    "mode": {
+      "description": "The operation mode of the coupler. By default 0 - i.e. control for real I2C devices attached. If 1 selected emulate them (useful for testing). ",
       "type": "integer",
       "default": 0
-  },
-
-  "id": {
+    },
+    "id": {
       "description": "The numeric ID of the coupler",
       "type": "integer",
       "default": 0
-  },
-
-  "username": {
+    },
+    "username": {
       "description": "The username for OPC UA server.",
       "type": "string",
       "default": ""
     },
-
-  "password": {
+    "password": {
       "description": "The password for OPC UA server.",
       "type": "string",
       "default": ""
     },
-
-  "heart_beat": {
+    "heart_beat": {
       "description": "Indication if coupler should send heart beats over a keep-alive network.",
       "type": "boolean",
       "default": 0
     },
-
-  "heart_beat_interval": {
+    "heart_beat_interval": {
       "description": "The heart beat interval (in ms)",
       "type": "integer",
       "default": 500
     },
-
-  "heart_beat_id_list": {
+    "heart_beat_id_list": {
       "description": "A comma separated list of couplers' IDs which should send to us keep-alive messages. ",
       "type": "string",
       "default": ""
     },
-
-  "heart_beat_timeout_interval": {
+    "heart_beat_timeout_interval": {
       "description": "The timeout (in ms) which when expired without a keep alive message will cause the coupler to go to a safe mode. ",
       "type": "integer",
       "default": 2000
     },
-
-  "network_address_url_data_type": {
+    "network_address_url_data_type": {
       "description": "Network address URL type used for Pub/Sub.",
       "type": "string",
       "default": "opc.udp://224.0.0.22:4840/"
     }
-
   }
 }