diff --git a/supervisor/homeassistant/websocket.py b/supervisor/homeassistant/websocket.py
index cab853a4b..793451ae2 100644
--- a/supervisor/homeassistant/websocket.py
+++ b/supervisor/homeassistant/websocket.py
@@ -119,7 +119,7 @@ class HomeAssistantWebSocket(CoreSysAttributes):
             and self._client.ha_version < MIN_VERSION[message_type]
         ):
             _LOGGER.info(
-                "WebSocket command %s is not supported untill core-%s. Ignoring WebSocket message.",
+                "WebSocket command %s is not supported until core-%s. Ignoring WebSocket message.",
                 message_type,
                 MIN_VERSION[message_type],
             )
diff --git a/tests/homeassistant/test_websocket.py b/tests/homeassistant/test_websocket.py
index 18f28c8b8..823337a98 100644
--- a/tests/homeassistant/test_websocket.py
+++ b/tests/homeassistant/test_websocket.py
@@ -40,7 +40,7 @@ async def test_send_command_old_core_version(coresys: CoreSys, caplog):
     )
 
     assert (
-        "WebSocket command supervisor/event is not supported untill core-2021.2.4"
+        "WebSocket command supervisor/event is not supported until core-2021.2.4"
         in caplog.text
     )