diff --git a/include/linux/input.h b/include/linux/input.h
index 577f4b6..fbc968f 100644
--- a/include/linux/input.h
+++ b/include/linux/input.h
@@ -244,6 +244,7 @@ struct input_mask {
 #define BUS_GSC			0x1A
 #define BUS_ATARI		0x1B
 #define BUS_SPI			0x1C
+#define BUS_RMI			0x1D
 
 /*
  * MT_TOOL types