diff --git a/sustechthesis.dtx b/sustechthesis.dtx
index 8070757..cf83f2d 100644
--- a/sustechthesis.dtx
+++ b/sustechthesis.dtx
@@ -3697,9 +3697,9 @@
 }
 \def\thu@subject@en{%
 \ifx\flagtrue\thu@gongshuo%
-Thesis for the professional degree of \degree@level@en@noun \ of \thu@degree@domain@en%
+Thesis for the Professional Degree of \degree@level@en@noun \ of \thu@degree@domain@en%
 \else%
-Thesis for the degree of \degree@level@en@noun \ of \thu@degree@domain@en%
+Thesis for the Degree of \degree@level@en@noun \ of \thu@degree@domain@en%
 \fi%
 }
 \newcommand\thu@option@supervisor@item{