diff --git a/homeassistant/components/http/auth.py b/homeassistant/components/http/auth.py
index 4736ef12391..7b8508894ce 100644
--- a/homeassistant/components/http/auth.py
+++ b/homeassistant/components/http/auth.py
@@ -190,6 +190,12 @@ def setup_auth(hass, app):
 
         elif (trusted_networks and
               await async_validate_trusted_networks(request)):
+            _LOGGER.warning(
+                'Access from trusted networks without auth token is going to '
+                'be removed in Home Assistant 0.96. Configure the trusted '
+                'networks auth provider or use long-lived access tokens to '
+                'access %s from %s',
+                request.path, request[KEY_REAL_IP])
             authenticated = True
 
         elif (support_legacy and HTTP_HEADER_HA_AUTH in request.headers and