diff --git a/tex/pkuthss.cls b/tex/pkuthss.cls
index 1121005..d0bf6d1 100644
--- a/tex/pkuthss.cls
+++ b/tex/pkuthss.cls
@@ -132,9 +132,9 @@
 	% Circled text, cf. <https://tex.stackexchange.com/questions/7032/>.
 	\RequirePackage{tikz}
 	\newcommand*{\thss@int@circled}[1]{%
-		\scalebox{0.8}{\tikz[baseline = (char.base)]{
+		\scalebox{0.8}{\tikz[baseline = {([yshift = -0.1\ccwd] char.base)}]{
 			\node[
-				shape = circle, draw = black, minimum size = 1.25em, inner sep = 0pt
+				shape = circle, draw = black, minimum size = 1.25\ccwd, inner sep = 0pt
 			] (char) {#1};
 		}}%
 	}
@@ -143,8 +143,7 @@
 	\renewcommand*{\thefootnote}%
 		{\protect\thss@int@circled{\arabic{footnote}}}
 	% Provides utility to modify footnote spacing.
-	% Option used to make sure it does not render interleaf pages totally blank.
-	\RequirePackage[cleardoublepage = current]{scrextend}
+	\RequirePackage{scrextend}
 	% Set up footnote spacing: whole paragraph indent 2 ccwd, 0.5 ccwd after mark.
 	\deffootnote{2\ccwd}{0pt}{\thefootnotemark\hspace{0.5\ccwd}}
 \fi