diff --git a/TODO b/TODO
index d1adae9d..d4dac491 100644
--- a/TODO
+++ b/TODO
@@ -13,6 +13,8 @@ It can be very similar at prehash, but checking only REP blocks
 that already have a hash.
 https://sourceforge.net/p/snapraid/discussion/1677233/thread/6615f0e3/
 
+* Use "data" in the configuration file for "disk".
+
 - Minor
 
 * Some programs are misusing the FILE_ATTRIBUTE_TEMPORARY.