diff --git a/include/ntfs/attrlist.h b/include/ntfs/attrlist.h
index be53f068..b6a11a72 100644
--- a/include/ntfs/attrlist.h
+++ b/include/ntfs/attrlist.h
@@ -26,6 +26,8 @@
 
 #include "attrib.h"
 
+extern int ntfs_attrlist_set(ntfs_inode *ni, u8 *new_al, int new_al_len);
+
 extern int ntfs_attrlist_entry_add(ntfs_inode *ni, ATTR_RECORD *attr);
 
 extern int ntfs_attrlist_entry_rm(ntfs_attr_search_ctx *ctx);