diff --git a/hyperref.dtx b/hyperref.dtx
index 627e962..661af87 100644
--- a/hyperref.dtx
+++ b/hyperref.dtx
@@ -5637,21 +5637,21 @@
 %    \end{macrocode}
 %    \begin{macrocode}
 \def\HyLang@vietnamese{%
-  \def\equationautorefname{Ph\uhorn{}\ohorn{}ng tr\`inh}%
-  \def\footnoteautorefname{Ch\'u th\'ich}%
-  \def\itemautorefname{m\d{u}c}%
-  \def\figureautorefname{H\`inh}%
-  \def\tableautorefname{B\h{a}ng}%
-  \def\partautorefname{Ph\`\acircumflex{}n}%
-  \def\appendixautorefname{Ph\d{u} l\d{u}c}%
-  \def\chapterautorefname{ch\uhorn{}\ohorn{}ng}%
-  \def\sectionautorefname{m\d{u}c}%
-  \def\subsectionautorefname{m\d{u}c}%
-  \def\subsubsectionautorefname{m\d{u}c}%
-  \def\paragraphautorefname{\dj{}o\d{a}n}%
-  \def\subparagraphautorefname{\dj{}o\d{a}n}%
-  \def\FancyVerbLineautorefname{d\`ong}%
-  \def\theoremautorefname{\DJ{}\d{i}nh l\'y}%
+  \def\equationautorefname{Phương trình}%
+  \def\footnoteautorefname{Chú thích}%
+  \def\itemautorefname{Mục}%
+  \def\figureautorefname{Hình}%
+  \def\tableautorefname{Bảng}%
+  \def\partautorefname{Phần}%
+  \def\appendixautorefname{Phụ lục}%
+  \def\chapterautorefname{Chương}%
+  \def\sectionautorefname{Mục}%
+  \def\subsectionautorefname{Mục}%
+  \def\subsubsectionautorefname{Mục}%
+  \def\paragraphautorefname{Đoạn}%
+  \def\subparagraphautorefname{Đoạn}%
+  \def\FancyVerbLineautorefname{Dòng}%
+  \def\theoremautorefname{Định lý}%
   \def\pageautorefname{Trang}%
 }
 %    \end{macrocode}