diff --git a/main.pdf b/main.pdf
index 031619c..16061cd 100644
Binary files a/main.pdf and b/main.pdf differ
diff --git a/myctex.sty b/myctex.sty
index e0538da..4b77b30 100644
--- a/myctex.sty
+++ b/myctex.sty
@@ -71,7 +71,7 @@
 \newenvironment{definition}[1][Definition]{\begin{trivlist}
 \item[\hskip \labelsep {\bfseries #1}]}{\end{trivlist}}
 \newenvironment{example}[1][Example]{\begin{trivlist}
-\item[\hskip \labelsep {\bfseries #1}]}{\end{trivliST}}
+\item[\hskip \labelsep {\bfseries #1}]}{\end{trivlist}}
 \newenvironment{remark}[1][Remark]{\begin{trivlist}
 \item[\hskip \labelsep {\bfseries #1}]}{\end{trivlist}}