diff --git a/jtidy.changes b/jtidy.changes
index 46033e1..4d093bf 100644
--- a/jtidy.changes
+++ b/jtidy.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Wed Dec 12 17:02:32 UTC 2012 - dvaleev@suse.com
+
+- increase stack size for ppc64 
+
 -------------------------------------------------------------------
 Fri Jun 15 13:39:06 UTC 2012 - mvyskocil@suse.cz
 
diff --git a/jtidy.spec b/jtidy.spec
index 41ebd11..b3035c7 100644
--- a/jtidy.spec
+++ b/jtidy.spec
@@ -93,7 +93,11 @@ sed -i 's/charset="ISO-8859-1"/charset="UTF-8"/' maven-build.xml
 %build
 export MAVEN_REPO_LOCAL=$(pwd)/.m2/repository
 mkdir -p $MAVEN_REPO_LOCAL
+if [ `uname -m` = "ppc64" ];then
+export ANT_OPTS="-Xss2m"
+else
 export ANT_OPTS="-Xss1m"
+fi
 export CLASSPATH=$(build-classpath junit slf4j xerces-j2 xml-commons-jaxp-1.3-apis):`pwd`/target/classes:`pwd`/target/test-classes
 export OPT_JAR_LIST="junit ant/ant-junit"
 %{ant} \