diff --git a/drivers/tty/Kconfig b/drivers/tty/Kconfig
index b46c4301b651..d8e05eeab232 100644
--- a/drivers/tty/Kconfig
+++ b/drivers/tty/Kconfig
@@ -316,7 +316,7 @@ config N_HDLC
 	  here.
 
 config N_GSM
-	tristate "GSM MUX line discipline support"
+	tristate "GSM MUX line discipline support (EXPERIMENTAL)"
 	depends on NET
 	help
 	  This line discipline provides support for the GSM MUX protocol and
diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig
index 84c6f374f1fe..2a9659dfb74c 100644
--- a/drivers/tty/serial/Kconfig
+++ b/drivers/tty/serial/Kconfig
@@ -1303,7 +1303,7 @@ config SERIAL_ALTERA_UART_CONSOLE
 	  Enable a Altera UART port to be the system console.
 
 config SERIAL_IFX6X60
-        tristate "SPI protocol driver for Infineon 6x60 modem"
+        tristate "SPI protocol driver for Infineon 6x60 modem (EXPERIMENTAL)"
 	depends on GPIOLIB && SPI
 	help
 	  Support for the IFX6x60 modem devices on Intel MID platforms.