diff --git a/homeassistant/components/discovery/__init__.py b/homeassistant/components/discovery/__init__.py
index 130898018d5..466d9d40d07 100644
--- a/homeassistant/components/discovery/__init__.py
+++ b/homeassistant/components/discovery/__init__.py
@@ -34,7 +34,6 @@ SERVICE_HASSIO = 'hassio'
 SERVICE_HOMEKIT = 'homekit'
 SERVICE_HEOS = 'heos'
 SERVICE_IGD = 'igd'
-SERVICE_IKEA_TRADFRI = 'ikea_tradfri'
 SERVICE_KONNECTED = 'konnected'
 SERVICE_MOBILE_APP = 'hass_mobile_app'
 SERVICE_NETGEAR = 'netgear_router'
@@ -54,7 +53,6 @@ CONFIG_ENTRY_HANDLERS = {
     'google_cast': 'cast',
     SERVICE_HEOS: 'heos',
     SERVICE_TELLDUSLIVE: 'tellduslive',
-    SERVICE_IKEA_TRADFRI: 'tradfri',
     'sonos': 'sonos',
     SERVICE_IGD: 'upnp',
     SERVICE_HOMEKIT: 'homekit_controller',
diff --git a/homeassistant/components/tradfri/config_flow.py b/homeassistant/components/tradfri/config_flow.py
index bbbe104f296..76f6a8f5764 100644
--- a/homeassistant/components/tradfri/config_flow.py
+++ b/homeassistant/components/tradfri/config_flow.py
@@ -76,8 +76,8 @@ class FlowHandler(config_entries.ConfigFlow):
             errors=errors,
         )
 
-    async def async_step_discovery(self, user_input):
-        """Handle discovery."""
+    async def async_step_zeroconf(self, user_input):
+        """Handle zeroconf discovery."""
         for entry in self._async_current_entries():
             if entry.data[CONF_HOST] == user_input['host']:
                 return self.async_abort(
diff --git a/homeassistant/components/tradfri/manifest.json b/homeassistant/components/tradfri/manifest.json
index c9a4fca3dc9..aba3805a4aa 100644
--- a/homeassistant/components/tradfri/manifest.json
+++ b/homeassistant/components/tradfri/manifest.json
@@ -7,6 +7,7 @@
     "pytradfri[async]==6.0.1"
   ],
   "dependencies": [],
+  "zeroconf": ["_coap._udp.local."],
   "codeowners": [
     "@ggravlingen"
   ]
diff --git a/homeassistant/generated/zeroconf.py b/homeassistant/generated/zeroconf.py
index f009132228c..434a463dc17 100644
--- a/homeassistant/generated/zeroconf.py
+++ b/homeassistant/generated/zeroconf.py
@@ -8,6 +8,9 @@ SERVICE_TYPES = {
     "_axis-video._tcp.local.": [
         "axis"
     ],
+    "_coap._udp.local.": [
+        "tradfri"
+    ],
     "_esphomelib._tcp.local.": [
         "esphome"
     ]
diff --git a/script/hassfest/zeroconf.py b/script/hassfest/zeroconf.py
index 9cec4a7211b..390429c3da7 100644
--- a/script/hassfest/zeroconf.py
+++ b/script/hassfest/zeroconf.py
@@ -63,7 +63,8 @@ def validate(integrations: Dict[str, Integration], config: Config):
     config.cache['zeroconf'] = content = generate_and_validate(integrations)
 
     with open(str(zeroconf_path), 'r') as fp:
-        if fp.read().strip() != content:
+        current = fp.read().strip()
+        if current != content:
             config.add_error(
                 "zeroconf",
                 "File zeroconf.py is not up to date. "
diff --git a/tests/components/tradfri/test_config_flow.py b/tests/components/tradfri/test_config_flow.py
index 6756a01bbc7..8fcc72dd4a5 100644
--- a/tests/components/tradfri/test_config_flow.py
+++ b/tests/components/tradfri/test_config_flow.py
@@ -99,7 +99,7 @@ async def test_discovery_connection(hass, mock_auth, mock_entry_setup):
     })
 
     flow = await hass.config_entries.flow.async_init(
-        'tradfri', context={'source': 'discovery'}, data={
+        'tradfri', context={'source': 'zeroconf'}, data={
             'host': '123.123.123.123'
         })
 
@@ -249,7 +249,7 @@ async def test_discovery_duplicate_aborted(hass):
     ).add_to_hass(hass)
 
     flow = await hass.config_entries.flow.async_init(
-        'tradfri', context={'source': 'discovery'}, data={
+        'tradfri', context={'source': 'zeroconf'}, data={
             'host': 'some-host'
         })
 
diff --git a/tests/components/zeroconf/test_init.py b/tests/components/zeroconf/test_init.py
index 0596d5e0ed5..106cf3377f4 100644
--- a/tests/components/zeroconf/test_init.py
+++ b/tests/components/zeroconf/test_init.py
@@ -3,6 +3,7 @@ from unittest.mock import patch
 
 from aiozeroconf import ServiceInfo, ServiceStateChange
 
+from homeassistant.generated import zeroconf as zc_gen
 from homeassistant.setup import async_setup_component
 from homeassistant.components import zeroconf
 
@@ -36,5 +37,5 @@ async def test_setup(hass):
             hass, zeroconf.DOMAIN, {zeroconf.DOMAIN: {}})
         await hass.async_block_till_done()
 
-    assert len(MockServiceBrowser.mock_calls) == 2
-    assert len(mock_config_flow.mock_calls) == 2
+    assert len(MockServiceBrowser.mock_calls) == len(zc_gen.SERVICE_TYPES)
+    assert len(mock_config_flow.mock_calls) == len(zc_gen.SERVICE_TYPES)