diff --git a/docs/source/whitepaper/corda-introductory-whitepaper_zhs.pdf b/docs/source/whitepaper/corda-introductory-whitepaper_zhs.pdf
index f963a09160..56a958b318 100644
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diff --git a/docs/source/whitepaper/corda-introductory-whitepaper_zhs.tex b/docs/source/whitepaper/corda-introductory-whitepaper_zhs.tex
index f4b920def2..f5aa0bdea6 100644
--- a/docs/source/whitepaper/corda-introductory-whitepaper_zhs.tex
+++ b/docs/source/whitepaper/corda-introductory-whitepaper_zhs.tex
@@ -1,4 +1,4 @@
-\documentclass{article}
+\documentclass[UTF8]{ctexart}
 \usepackage{xeCJK}
 \author{Richard Gendal Brown, James Carlyle, Ian Grigg, Mike Hearn}
 \date{2016年8月}
diff --git a/docs/source/whitepaper/corda-introductory-whitepaper_zht.pdf b/docs/source/whitepaper/corda-introductory-whitepaper_zht.pdf
index 0eb54567bf..d7a265db6f 100644
Binary files a/docs/source/whitepaper/corda-introductory-whitepaper_zht.pdf and b/docs/source/whitepaper/corda-introductory-whitepaper_zht.pdf differ
diff --git a/docs/source/whitepaper/corda-introductory-whitepaper_zht.tex b/docs/source/whitepaper/corda-introductory-whitepaper_zht.tex
index 4fa2ea3fae..0a3e4a779b 100644
--- a/docs/source/whitepaper/corda-introductory-whitepaper_zht.tex
+++ b/docs/source/whitepaper/corda-introductory-whitepaper_zht.tex
@@ -1,4 +1,4 @@
-\documentclass{article}
+\documentclass[UTF8]{ctexart}
 \usepackage{xeCJK}
 \author{Richard Gendal Brown, James Carlyle, Ian Grigg, Mike Hearn}
 \date{2016年8月}