diff --git a/subsys/modbus/Kconfig b/subsys/modbus/Kconfig
index 614afdd8341..38c7d761c07 100644
--- a/subsys/modbus/Kconfig
+++ b/subsys/modbus/Kconfig
@@ -44,6 +44,7 @@ config MODBUS_SERIAL
 	default y
 	depends on SERIAL && SERIAL_HAS_DRIVER
 	depends on DT_HAS_ZEPHYR_MODBUS_SERIAL_ENABLED
+	select UART_USE_RUNTIME_CONFIGURE
 	help
 	  Enable Modbus over serial line support.