diff --git a/include/linux/device.h b/include/linux/device.h
index ed4e39f2c4230da03f93651f5d323f805cdb6c94..aebb81036db2d368a7b55664f5a2b9d102c5109d 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -25,8 +25,6 @@
 #include <asm/atomic.h>
 #include <asm/device.h>
 
-#define BUS_ID_SIZE		20
-
 struct device;
 struct device_private;
 struct device_driver;