diff --git a/ChangeLog b/ChangeLog
index 033dc75cf..29828aa9f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2022-02-13  Axel Beckert  <abe@deuxchevaux.org>
+
+	* unposted: README: Fix underline length of "Incompatibilities
+	between 5.5.1 and 5.6.2" headline. (Cosmetic fix)
+
 2022-02-12  dana  <dana@dana.is>
 
 	* unposted: Config/version.mk: Post-release version bump
diff --git a/README b/README
index 79563e451..353667289 100644
--- a/README
+++ b/README
@@ -160,7 +160,7 @@ https://zsh.org/workers/48414 (commit zsh-5.8-348-g2c000ee7b) for details
 and an example.
 
 Incompatibilities between 5.5.1 and 5.6.2
-------------------------------------------
+-----------------------------------------
 
 The completion helper _remote_files, typically used after a hostname
 with scp-style completion, now uses remote-files instead of files as a