diff --git a/tests/components/mqtt/test_discovery.py b/tests/components/mqtt/test_discovery.py
index 3d3baf1307c..baa3542a22d 100644
--- a/tests/components/mqtt/test_discovery.py
+++ b/tests/components/mqtt/test_discovery.py
@@ -1545,6 +1545,7 @@ async def test_mqtt_discovery_unsubscribe_once(
 
         async def async_step_mqtt(self, discovery_info: MqttServiceInfo) -> FlowResult:
             """Test mqtt step."""
+            await asyncio.sleep(0.1)
             return self.async_abort(reason="already_configured")
 
     with mock_config_flow("comp", TestFlow):