diff --git a/fs/ntfs3/bitmap.c b/fs/ntfs3/bitmap.c
index 5d44ceac855b7477afc0aa5e8e418bea881fd070..1675c9a6978843073bad8662f26a36692262d341 100644
--- a/fs/ntfs3/bitmap.c
+++ b/fs/ntfs3/bitmap.c
@@ -1324,7 +1324,7 @@ int wnd_extend(struct wnd_bitmap *wnd, size_t new_bits)
 		new_last = wbits;
 
 	if (new_wnd != wnd->nwnd) {
-		new_free = kmalloc(new_wnd * sizeof(u16), GFP_NOFS);
+		new_free = kmalloc_array(new_wnd, sizeof(u16), GFP_NOFS);
 		if (!new_free)
 			return -ENOMEM;