diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h
index 7deb5b0347f7..04f659f1e560 100644
--- a/include/linux/nfs_fs.h
+++ b/include/linux/nfs_fs.h
@@ -553,6 +553,7 @@ extern void * nfs_root_data(void);
 #define NFSDBG_ROOT		0x0080
 #define NFSDBG_CALLBACK		0x0100
 #define NFSDBG_CLIENT		0x0200
+#define NFSDBG_MOUNT		0x0400
 #define NFSDBG_ALL		0xFFFF
 
 #ifdef __KERNEL__