diff --git a/homeassistant/components/config/entity_registry.py b/homeassistant/components/config/entity_registry.py
index afd0eee0726..79377eb7f6a 100644
--- a/homeassistant/components/config/entity_registry.py
+++ b/homeassistant/components/config/entity_registry.py
@@ -166,7 +166,6 @@ def websocket_get_entities(
         vol.Optional("icon"): vol.Any(
             vol.Schema(
                 {
-                    vol.Required("default"): str,
                     vol.Optional("state"): dict,
                 }
             ),