diff --git a/fpdfsdk/fpdf_attachment.cpp b/fpdfsdk/fpdf_attachment.cpp
index 8c86b84..96434bf 100644
--- a/fpdfsdk/fpdf_attachment.cpp
+++ b/fpdfsdk/fpdf_attachment.cpp
@@ -200,8 +200,7 @@
       ByteString encoded =
           PDF_HexEncodeString(string_object->GetString().AsStringView());
       return Utf16EncodeMaybeCopyAndReturnLength(
-          pdfium::MakeRetain<CPDF_String>(nullptr, encoded)->GetUnicodeText(),
-          buffer_span);
+          PDF_DecodeText(encoded.unsigned_span()), buffer_span);
     }
   }