diff --git a/pentaho-reporting-flow-engine.changes b/pentaho-reporting-flow-engine.changes
index 5aab71a..9bb2b08 100644
--- a/pentaho-reporting-flow-engine.changes
+++ b/pentaho-reporting-flow-engine.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Tue Jul  1 14:07:44 UTC 2014 - tchvatal@suse.com
+
+- Specify target/source versions
+
 -------------------------------------------------------------------
 Tue Jan  7 14:03:13 UTC 2014 - mvyskocil@suse.com
 
diff --git a/pentaho-reporting-flow-engine.spec b/pentaho-reporting-flow-engine.spec
index 332e539..c96c9ff 100644
--- a/pentaho-reporting-flow-engine.spec
+++ b/pentaho-reporting-flow-engine.spec
@@ -15,6 +15,7 @@
 # Please submit bugfixes or comments via http://bugs.opensuse.org/
 #
 
+
 Name:           pentaho-reporting-flow-engine
 Version:        0.9.4
 Release:        0
@@ -36,8 +37,8 @@ BuildRequires:  librepository
 BuildRequires:  libserializer
 BuildRequires:  pentaho-libxml
 BuildRequires:  sac
-BuildRequires:  xml-commons-apis
 BuildRequires:  unzip
+BuildRequires:  xml-commons-apis
 Requires:       flute
 Requires:       java
 Requires:       jpackage-utils
@@ -72,7 +73,9 @@ build-jar-repository -s -p lib commons-logging-api libbase libloader \
     libserializer
 
 %build
-ant jar javadoc
+ant \
+    -Dant.build.javac.source=1.5 -Dant.build.javac.target=1.5 \
+    jar javadoc
 
 %install