diff --git a/CHANGELOG.md b/CHANGELOG.md
index 063a0095e6..3bd1c4fb1e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -73,6 +73,7 @@ We’ve made fixes to GOV.UK Frontend in the following pull requests:
 
 - [#2807: Tidy up and refactor the Character Count JavaScript](https://github.com/alphagov/govuk-frontend/pull/2807)
 - [#2811: Use Element.id to get module id for accordion](https://github.com/alphagov/govuk-frontend/pull/2811)
+- [#2821: Avoid duplicated --error class on Character Count](https://github.com/alphagov/govuk-frontend/pull/2821)
 
 ## 4.3.1 (Patch release)
 
diff --git a/src/govuk/components/character-count/template.njk b/src/govuk/components/character-count/template.njk
index dd04e4dd53..d812a777ee 100644
--- a/src/govuk/components/character-count/template.njk
+++ b/src/govuk/components/character-count/template.njk
@@ -13,7 +13,7 @@
     spellcheck: params.spellcheck,
     value: params.value,
     formGroup: params.formGroup,
-    classes: 'govuk-js-character-count' + (' govuk-textarea--error' if params.errorMessage) + (' ' + params.classes if params.classes),
+    classes: 'govuk-js-character-count' + (' ' + params.classes if params.classes),
     label: {
       html: params.label.html,
       text: params.label.text,