diff --git a/drivers/serial/Kconfig.rtt b/drivers/serial/Kconfig.rtt
index 2f530ab4a6f..0be375fe3bb 100644
--- a/drivers/serial/Kconfig.rtt
+++ b/drivers/serial/Kconfig.rtt
@@ -9,6 +9,7 @@ menuconfig UART_RTT
 	depends on DT_HAS_SEGGER_RTT_UART_ENABLED
 	depends on USE_SEGGER_RTT
 	select SEGGER_RTT_CUSTOM_LOCKING
+	select SERIAL_SUPPORT_ASYNC
 	help
 	  This option enables access RTT channel as UART device.