diff --git a/others/appendix/list/list-en.tex b/others/appendix/list/list-en.tex
index eca1b96c85..dca69a8db9 100644
--- a/others/appendix/list/list-en.tex
+++ b/others/appendix/list/list-en.tex
@@ -3778,7 +3778,7 @@ \section{Notes and short summary}
 '$4 \rightarrow 2 \rightarrow 0 \rightarrow 1$'. Generally, $n = d_m...d_2d_1$ can be represented as
 '$d_1 \rightarrow d_2 \rightarrow ... \rightarrow d_m$'. Given two numbers $a$, $b$ in linked-list form.
 Realize basic arithmetic operations such as plus and minus.
-\begin{figure}[htdp]
+\begin{figure}[htbp]
 \centering
 \begin{tikzpicture}[scale=2]
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