diff --git a/src/lib.rs b/src/lib.rs
index 5a8fa1d..29d4dc0 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -180,7 +180,7 @@ impl Mnemonic {
 	/// can be avoided for languages without special UTF8 characters.
 	#[inline]
 	#[cfg(feature = "std")]
-	fn normalize_utf8_cow<'a>(cow: &mut Cow<'a, str>) {
+	pub fn normalize_utf8_cow<'a>(cow: &mut Cow<'a, str>) {
 		let is_nfkd = unicode_normalization::is_nfkd_quick(cow.as_ref().chars());
 		if is_nfkd != unicode_normalization::IsNormalized::Yes {
 			*cow = Cow::Owned(cow.as_ref().nfkd().to_string());