diff --git a/include/uapi/linux/tty.h b/include/uapi/linux/tty.h
index 01c4410352ffd..e7855dffd5920 100644
--- a/include/uapi/linux/tty.h
+++ b/include/uapi/linux/tty.h
@@ -35,5 +35,6 @@
 #define N_TRACESINK	23	/* Trace data routing for MIPI P1149.7 */
 #define N_TRACEROUTER	24	/* Trace data routing for MIPI P1149.7 */
 #define N_NCI		25	/* NFC NCI UART */
+#define N_SPEAKUP	26	/* Speakup communication with synths */
 
 #endif /* _UAPI_LINUX_TTY_H */