diff --git a/rcgen/src/string_types.rs b/rcgen/src/string_types.rs
index 61c092bf..1abcdef0 100644
--- a/rcgen/src/string_types.rs
+++ b/rcgen/src/string_types.rs
@@ -200,8 +200,6 @@ impl TryFrom<String> for Ia5String {
 	///
 	/// Any character not in the [`Ia5String`] charset will be rejected.
 	/// See [`Ia5String`] documentation for more information.
-	///
-	/// This conversion does not allocate or copy memory.
 	fn try_from(input: String) -> Result<Self, Error> {
 		if !input.is_ascii() {
 			return Err(Error::InvalidAsn1String(InvalidAsn1String::Ia5String(