diff --git a/tests/counter.v b/tests/counter.v
index 8661b9b398eacd56c8f02234435684e6cb4848e2..8986a132626462a7db31da9255fd4a2963d53c4b 100644
--- a/tests/counter.v
+++ b/tests/counter.v
@@ -1,6 +1,7 @@
(* This file contains a formalization of the monotone counter, but with an
explicit contruction of the monoid, as we have also done in the proof mode
-paper. A version that uses the authoritative monoid and natural number monoid
+paper. This should simplify explaining and understanding what is happening.
+A version that uses the authoritative monoid and natural number monoid
under max can be found in `heap_lang/lib/counter.v`. *)
From iris.program_logic Require Export weakestpre.
From iris.heap_lang Require Export lang.