diff --git a/API.md b/API.md
index b8d719a39..d6a6ba4d2 100644
--- a/API.md
+++ b/API.md
@@ -574,7 +574,7 @@ Write data to add-on stdin
 }
 ```
 
-### Service discovery
+### discovery
 
 - GET `/discovery`
 ```json
@@ -584,8 +584,6 @@ Write data to add-on stdin
             "addon": "slug",
             "service": "name",
             "uuid": "uuid",
-            "component": "component",
-            "platform": "null|platform",
             "config": {}
         }
     ]
@@ -598,8 +596,6 @@ Write data to add-on stdin
     "addon": "slug",
     "service": "name",
     "uuid": "uuid",
-    "component": "component",
-    "platform": "null|platform",
     "config": {}
 }
 ```
@@ -608,8 +604,6 @@ Write data to add-on stdin
 ```json
 {
     "service": "name",
-    "component": "component",
-    "platform": "null|platform",
     "config": {}
 }
 ```
@@ -623,6 +617,8 @@ return:
 
 - DEL `/discovery/{UUID}`
 
+### Services
+
 - GET `/services`
 ```json
 {
diff --git a/hassio/api/discovery.py b/hassio/api/discovery.py
index 0acf972a9..b3ff6f99e 100644
--- a/hassio/api/discovery.py
+++ b/hassio/api/discovery.py
@@ -3,8 +3,8 @@ import voluptuous as vol
 
 from .utils import api_process, api_validate
 from ..const import (
-    ATTR_ADDON, ATTR_UUID, ATTR_COMPONENT, ATTR_PLATFORM, ATTR_CONFIG,
-    ATTR_DISCOVERY, ATTR_SERVICE, REQUEST_FROM)
+    ATTR_ADDON, ATTR_UUID, ATTR_CONFIG, ATTR_DISCOVERY, ATTR_SERVICE,
+    REQUEST_FROM)
 from ..coresys import CoreSysAttributes
 from ..exceptions import APIError, APIForbidden
 from ..validate import SERVICE_ALL
@@ -12,8 +12,6 @@ from ..validate import SERVICE_ALL
 
 SCHEMA_DISCOVERY = vol.Schema({
     vol.Required(ATTR_SERVICE): SERVICE_ALL,
-    vol.Required(ATTR_COMPONENT): vol.Coerce(str),
-    vol.Optional(ATTR_PLATFORM): vol.Maybe(vol.Coerce(str)),
     vol.Optional(ATTR_CONFIG): vol.Maybe(dict),
 })
 
@@ -44,8 +42,6 @@ class APIDiscovery(CoreSysAttributes):
                 ATTR_ADDON: message.addon,
                 ATTR_SERVICE: message.service,
                 ATTR_UUID: message.uuid,
-                ATTR_COMPONENT: message.component,
-                ATTR_PLATFORM: message.platform,
                 ATTR_CONFIG: message.config,
             })
 
@@ -78,8 +74,6 @@ class APIDiscovery(CoreSysAttributes):
             ATTR_ADDON: message.addon,
             ATTR_SERVICE: message.service,
             ATTR_UUID: message.uuid,
-            ATTR_COMPONENT: message.component,
-            ATTR_PLATFORM: message.platform,
             ATTR_CONFIG: message.config,
         }
 
diff --git a/hassio/const.py b/hassio/const.py
index 762e9c95e..a9733cf86 100644
--- a/hassio/const.py
+++ b/hassio/const.py
@@ -160,8 +160,6 @@ ATTR_HOST = 'host'
 ATTR_USERNAME = 'username'
 ATTR_PROTOCOL = 'protocol'
 ATTR_DISCOVERY = 'discovery'
-ATTR_PLATFORM = 'platform'
-ATTR_COMPONENT = 'component'
 ATTR_CONFIG = 'config'
 ATTR_SERVICES = 'services'
 ATTR_SERVICE = 'service'
diff --git a/hassio/discovery.py b/hassio/discovery.py
index e5db61fa9..65ad2bcbf 100644
--- a/hassio/discovery.py
+++ b/hassio/discovery.py
@@ -76,8 +76,8 @@ class Discovery(CoreSysAttributes, JsonConfig):
             _LOGGER.warning("Duplicate discovery message from %s", addon.slug)
             return old_message
 
-        _LOGGER.info("Send discovery to Home Assistant %s/%s from %s",
-                     component, platform, addon.slug)
+        _LOGGER.info("Send discovery to Home Assistant %s from %s",
+                     service, addon.slug)
         self.message_obj[message.uuid] = message
         self.save()
 
@@ -89,8 +89,8 @@ class Discovery(CoreSysAttributes, JsonConfig):
         self.message_obj.pop(message.uuid, None)
         self.save()
 
-        _LOGGER.info("Delete discovery to Home Assistant %s/%s from %s",
-                     message.component, message.platform, message.addon)
+        _LOGGER.info("Delete discovery to Home Assistant %s from %s",
+                     message.service, message.addon)
         self.sys_create_task(self._push_discovery(message, CMD_DEL))
 
     async def _push_discovery(self, message, command):
@@ -115,9 +115,7 @@ class Discovery(CoreSysAttributes, JsonConfig):
 @attr.s
 class Message:
     """Represent a single Discovery message."""
+    uuid = attr.ib(factory=lambda: uuid4().hex, cmp=False)
     addon = attr.ib()
     service = attr.ib()
-    component = attr.ib()
-    platform = attr.ib()
     config = attr.ib(cmp=False)
-    uuid = attr.ib(factory=lambda: uuid4().hex, cmp=False)
diff --git a/hassio/validate.py b/hassio/validate.py
index 6c3eaf39a..98858ad33 100644
--- a/hassio/validate.py
+++ b/hassio/validate.py
@@ -9,8 +9,7 @@ from .const import (
     ATTR_ADDONS_CUSTOM_LIST, ATTR_PASSWORD, ATTR_HOMEASSISTANT, ATTR_HASSIO,
     ATTR_BOOT, ATTR_LAST_BOOT, ATTR_SSL, ATTR_PORT, ATTR_WATCHDOG, ATTR_CONFIG,
     ATTR_WAIT_BOOT, ATTR_UUID, ATTR_REFRESH_TOKEN, ATTR_HASSOS_CLI,
-    ATTR_ACCESS_TOKEN, ATTR_DISCOVERY, ATTR_ADDON, ATTR_COMPONENT,
-    ATTR_PLATFORM, ATTR_SERVICE,
+    ATTR_ACCESS_TOKEN, ATTR_DISCOVERY, ATTR_ADDON, ATTR_SERVICE,
     SERVICE_MQTT,
     CHANNEL_STABLE, CHANNEL_BETA, CHANNEL_DEV)
 from .utils.validate import schema_or, validate_timezone
@@ -114,8 +113,6 @@ SCHEMA_DISCOVERY = vol.Schema([
         vol.Required(ATTR_UUID): UUID_MATCH,
         vol.Required(ATTR_ADDON): vol.Coerce(str),
         vol.Required(ATTR_SERVICE): SERVICE_ALL,
-        vol.Required(ATTR_COMPONENT): vol.Coerce(str),
-        vol.Required(ATTR_PLATFORM): vol.Maybe(vol.Coerce(str)),
         vol.Required(ATTR_CONFIG): vol.Maybe(dict),
     }, extra=vol.REMOVE_EXTRA)
 ])