diff --git a/homeassistant/components/zigbee.py b/homeassistant/components/zigbee.py
index 4b4da350199..8a9271745c9 100644
--- a/homeassistant/components/zigbee.py
+++ b/homeassistant/components/zigbee.py
@@ -55,7 +55,7 @@ CONFIG_SCHEMA = vol.Schema({
 
 PLATFORM_SCHEMA = vol.Schema({
     vol.Required(CONF_NAME): cv.string,
-    vol.Required(CONF_PIN): cv.positive_int,
+    vol.Optional(CONF_PIN): cv.positive_int,
     vol.Optional(CONF_ADDRESS): cv.string,
 }, extra=vol.ALLOW_EXTRA)