diff --git a/iter.opam b/iter.opam
index 847ab21..fa81419 100644
--- a/iter.opam
+++ b/iter.opam
@@ -4,7 +4,7 @@ version: "1.2.1"
 authors: ["Simon Cruanes" "Gabriel Radanne"]
 maintainer: "simon.cruanes.2007@m4x.org"
 license: "BSD-2-clauses"
-description: "Simple abstraction over `iter` functions, intended to iterate efficiently on collections while performing some transformations"
+synopsis: "Simple abstraction over `iter` functions, intended to iterate efficiently on collections while performing some transformations"
 build: [
   ["dune" "build" "@install" "-p" name "-j" jobs]
   ["dune" "build" "@doc" "-p" name] {with-doc}
diff --git a/sequence.opam b/sequence.opam
index b9a2f70..89a8ff9 100644
--- a/sequence.opam
+++ b/sequence.opam
@@ -4,7 +4,7 @@ version: "1.1"
 author: "Simon Cruanes"
 maintainer: "simon.cruanes.2007@m4x.org"
 license: "BSD-2-clauses"
-description: "Compatibility package for `iter`"
+synopsis: "Compatibility package for `iter`"
 build: [
   ["dune" "build" "@install" "-p" name "-j" jobs]
 ]