diff --git a/include/linux/serio.h b/include/linux/serio.h
index 1ebf045..d9377ce 100644
--- a/include/linux/serio.h
+++ b/include/linux/serio.h
@@ -209,5 +209,6 @@
 #define SERIO_PENMOUNT	0x31
 #define SERIO_TOUCHRIGHT	0x32
 #define SERIO_TOUCHWIN	0x33
+#define SERIO_TAOSEVM	0x34
 
 #endif