diff --git a/src/plfa/part2/DeBruijn.lagda.md b/src/plfa/part2/DeBruijn.lagda.md
index d1158fe6..522f5457 100644
--- a/src/plfa/part2/DeBruijn.lagda.md
+++ b/src/plfa/part2/DeBruijn.lagda.md
@@ -451,9 +451,8 @@ We can then introduce a convenient abbreviation for variables:
    → Γ ⊢ lookup (toWitness n<?length)
 #_ n {n<?length}  =  ` count (toWitness n<?length)
 ```
-The type of function `#_` asks for clarification. Function `#_` takes
-an implicit argument `n<?length` that provides evidence for `n` to be
-within the context's bounds. Recall that
+Function `#_` takes an implicit argument `n<?length` that provides
+evidence for `n` to be within the context's bounds. Recall that
 [`True`]({{ site.baseurl }}/Decidable/#proof-by-reflection),
 [`_≤?_`]({{ site.baseurl }}/Decidable/#the-best-of-both-worlds) and
 [`toWitness`]({{ site.baseurl }}/Decidable/#decidables-from-booleans-and-booleans-from-decidables)