diff --git a/include/linux/ncp_fs.h b/include/linux/ncp_fs.h
index 02e352b..0ea7f89 100644
--- a/include/linux/ncp_fs.h
+++ b/include/linux/ncp_fs.h
@@ -212,6 +212,7 @@
 
 /* linux/fs/ncpfs/ioctl.c */
 int ncp_ioctl(struct inode *, struct file *, unsigned int, unsigned long);
+long ncp_compat_ioctl(struct file *, unsigned int, unsigned long);
 
 /* linux/fs/ncpfs/sock.c */
 int ncp_request2(struct ncp_server *server, int function,