diff --git a/jfreechart-1.0.19/ant/build-swt.xml b/jfreechart-1.0.19/ant/build-swt.xml
index a7a4246..6806489 100644
--- a/jfreechart-1.0.19/ant/build-swt.xml
+++ b/jfreechart-1.0.19/ant/build-swt.xml
@@ -32,6 +32,7 @@
                destdir="${basedir}/build"
                debug="on"
                deprecation="on"
+               encoding="UTF-8"
                source="1.6"
                target="1.6"
                includeantruntime="false">
@@ -61,6 +62,7 @@
                destdir="${basedir}/build"
                debug="on"
                deprecation="on"
+               encoding="UTF-8"
                source="1.6"
                target="1.6"
                includeantruntime="false">