diff --git a/include/linux/major.h b/include/linux/major.h
index 058ec15dd060341391277f6f82f479b151a494eb..6a8ca98c9a962ee67fbcf3da94fe0222f6885c2c 100644
--- a/include/linux/major.h
+++ b/include/linux/major.h
@@ -145,6 +145,7 @@
 #define UNIX98_PTY_MAJOR_COUNT	8
 #define UNIX98_PTY_SLAVE_MAJOR	(UNIX98_PTY_MASTER_MAJOR+UNIX98_PTY_MAJOR_COUNT)
 
+#define DRBD_MAJOR		147
 #define RTF_MAJOR		150
 #define RAW_MAJOR		162