diff --git a/homeassistant/components/default_config/__init__.py b/homeassistant/components/default_config/__init__.py
index 888a4d51c95..6743893888d 100644
--- a/homeassistant/components/default_config/__init__.py
+++ b/homeassistant/components/default_config/__init__.py
@@ -1,7 +1,11 @@
 """Component providing default configuration for new users."""
+try:
+    import av
+except ImportError:
+    av = None
 
 DOMAIN = 'default_config'
-DEPENDENCIES = (
+DEPENDENCIES = [
     'automation',
     'cloud',
     'config',
@@ -17,7 +21,10 @@ DEPENDENCIES = (
     'system_health',
     'updater',
     'zeroconf',
-)
+]
+# Only automatically set up the stream component when dependency installed
+if av is not None:
+    DEPENDENCIES.append('stream')
 
 
 async def async_setup(hass, config):