-\newcommand{\scriptsize}{\@setfontsize\scriptsize\@viiipt{9.5}}
-\newcommand{\tiny}{\@setfontsize\tiny\@vipt\@viipt}
-\newcommand{\large}{\@setfontsize\large\@xivpt{21}}
-\newcommand{\Large}{\@setfontsize\Large\@xviipt{25}}
-\newcommand{\LARGE}{\@setfontsize\LARGE\@xxpt{28}}
-\newcommand{\huge}{\@setfontsize\huge\@xxvpt{33}}
+\DeclareRobustCommand{\scriptsize}{\@setfontsize\scriptsize\@viiipt{9.5}}
+\DeclareRobustCommand{\tiny}{\@setfontsize\tiny\@vipt\@viipt}
+\DeclareRobustCommand{\large}{\@setfontsize\large\@xivpt{21}}
+\DeclareRobustCommand{\Large}{\@setfontsize\Large\@xviipt{25}}
+\DeclareRobustCommand{\LARGE}{\@setfontsize\LARGE\@xxpt{28}}
+\DeclareRobustCommand{\huge}{\@setfontsize\huge\@xxvpt{33}}