diff --git a/homeassistant/components/plum_lightpad/__init__.py b/homeassistant/components/plum_lightpad/__init__.py
index bfdf67a0f40..a995d1a816a 100644
--- a/homeassistant/components/plum_lightpad/__init__.py
+++ b/homeassistant/components/plum_lightpad/__init__.py
@@ -10,9 +10,9 @@ from homeassistant.helpers import discovery
 from homeassistant.helpers.aiohttp_client import async_get_clientsession
 import homeassistant.helpers.config_validation as cv
 
-_LOGGER = logging.getLogger(__name__)
+from .const import DOMAIN
 
-DOMAIN = "plum_lightpad"
+_LOGGER = logging.getLogger(__name__)
 
 CONFIG_SCHEMA = vol.Schema(
     {
@@ -26,8 +26,6 @@ CONFIG_SCHEMA = vol.Schema(
     extra=vol.ALLOW_EXTRA,
 )
 
-PLUM_DATA = "plum"
-
 
 async def async_setup(hass, config):
     """Plum Lightpad Platform initialization."""
@@ -35,7 +33,7 @@ async def async_setup(hass, config):
     conf = config[DOMAIN]
     plum = Plum(conf[CONF_USERNAME], conf[CONF_PASSWORD])
 
-    hass.data[PLUM_DATA] = plum
+    hass.data[DOMAIN] = plum
 
     def cleanup(event):
         """Clean up resources."""
diff --git a/homeassistant/components/plum_lightpad/const.py b/homeassistant/components/plum_lightpad/const.py
new file mode 100644
index 00000000000..efea35d0a7a
--- /dev/null
+++ b/homeassistant/components/plum_lightpad/const.py
@@ -0,0 +1,3 @@
+"""Constants for the Plum Lightpad component."""
+
+DOMAIN = "plum_lightpad"
diff --git a/homeassistant/components/plum_lightpad/light.py b/homeassistant/components/plum_lightpad/light.py
index 2fea14474bb..0dffa4c966c 100644
--- a/homeassistant/components/plum_lightpad/light.py
+++ b/homeassistant/components/plum_lightpad/light.py
@@ -8,7 +8,7 @@ from homeassistant.components.light import (
 )
 import homeassistant.util.color as color_util
 
-from . import PLUM_DATA
+from .const import DOMAIN
 
 
 async def async_setup_platform(hass, config, async_add_entities, discovery_info=None):
@@ -16,7 +16,7 @@ async def async_setup_platform(hass, config, async_add_entities, discovery_info=
     if discovery_info is None:
         return
 
-    plum = hass.data[PLUM_DATA]
+    plum = hass.data[DOMAIN]
 
     entities = []