diff --git a/.changeset/khaki-ways-behave.md b/.changeset/khaki-ways-behave.md
new file mode 100644
index 00000000..40dcf4ab
--- /dev/null
+++ b/.changeset/khaki-ways-behave.md
@@ -0,0 +1,5 @@
+---
+"nhsuk-frontend-react": patch
+---
+
+fix(nhsuk-frontend-react): replace Fieldset.Legend className with the correct one