diff --git a/fs/9p/acl.h b/fs/9p/acl.h
index b1414f7..0adcc43 100644
--- a/fs/9p/acl.h
+++ b/fs/9p/acl.h
@@ -17,11 +17,16 @@
 #ifdef CONFIG_9P_FS_POSIX_ACL
 extern int v9fs_get_acl(struct inode *, struct p9_fid *);
 extern int v9fs_check_acl(struct inode *inode, int mask);
+extern int v9fs_acl_chmod(struct dentry *);
 #else
 #define v9fs_check_acl NULL
 static inline int v9fs_get_acl(struct inode *inode, struct p9_fid *fid)
 {
 	return 0;
 }
+static inline int v9fs_acl_chmod(struct dentry *dentry)
+{
+	return 0;
+}
 #endif
 #endif /* FS_9P_XATTR_H */