diff --git a/adaptx.changes b/adaptx.changes
index 5a200a6..ea29aa6 100644
--- a/adaptx.changes
+++ b/adaptx.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Thu Sep 14 11:15:20 UTC 2017 - fstrba@suse.com
+
+- Fix building with jdk9 by specifying java source and target 1.6
+
 -------------------------------------------------------------------
 Fri May 19 11:39:08 UTC 2017 - tchvatal@suse.com
 
diff --git a/adaptx.spec b/adaptx.spec
index 1b1dd99..0382964 100644
--- a/adaptx.spec
+++ b/adaptx.spec
@@ -70,9 +70,9 @@ done
 %build
 perl -p -i -e 's|classic|modern|' src/build.xml
 export CLASSPATH=$(build-classpath xml-commons-apis log4j xerces-j2 xerces-j2-xml-apis)
-ant -Dant.build.javac.source=1.5 -Dant.build.javac.target=1.5 -buildfile src/build.xml jar javadoc
+ant -Dant.build.javac.source=1.6 -Dant.build.javac.target=1.6 -buildfile src/build.xml jar javadoc
 CLASSPATH=$CLASSPATH:dist/adaptx_%{version}.jar
-ant -Dant.build.javac.source=1.5 -Dant.build.javac.target=1.5 -buildfile src/build.xml doc
+ant -Dant.build.javac.source=1.6 -Dant.build.javac.target=1.6 -buildfile src/build.xml doc
 
 %install
 # jar