diff --git a/ntfsprogs/mkntfs.c b/ntfsprogs/mkntfs.c
index 595163a8..69574b65 100644
--- a/ntfsprogs/mkntfs.c
+++ b/ntfsprogs/mkntfs.c
@@ -1437,10 +1437,10 @@ static int mkntfs_attr_find(const ATTR_TYPES type, const ntfschar *name,
  *	EIO	I/O error or corrupt data structures found.
  *	ENOMEM	Not enough memory to allocate necessary buffers.
  */
-int mkntfs_attr_lookup(const ATTR_TYPES type, const ntfschar *name,
+static int mkntfs_attr_lookup(const ATTR_TYPES type, const ntfschar *name,
 		const u32 name_len, const IGNORE_CASE_BOOL ic,
-		const VCN lowest_vcn, const u8 *val, const u32 val_len,
-		ntfs_attr_search_ctx *ctx)
+		const VCN lowest_vcn __attribute__ ((unused)), const u8 *val,
+		const u32 val_len, ntfs_attr_search_ctx *ctx)
 {
 	ntfs_inode *base_ni;
 
@@ -3509,6 +3509,9 @@ static void mkntfs_fill_device_with_zeroes(void)
 	Qprintf(" - Done.\n");
 }
 
+/**
+ * create_file_volume -
+ */
 static void create_file_volume(MFT_RECORD *m, MFT_REF root_ref, VOLUME_FLAGS fl)
 {
 	int i, err;