diff --git a/dat/data.base b/dat/data.base
index 9f2e6433a..ad7c61477 100644
--- a/dat/data.base
+++ b/dat/data.base
@@ -3213,7 +3213,7 @@ master key of thievery
 	a powerful magic which allows it to open any lock.  When
 	carried, it grants its owner warning, teleport control, and
 	reduces all physical damage by half.  Finally, when invoked,
-	it has the ability to disarm any trap.
+	it has the ability to disarm any trapped lock.
 master of thieves
 	There was a flutter of wings at the window.  Ymor shifted his
 	bulk out of the chair and crossed the room, coming back with