diff --git a/build.xml b/build.xml
index 5c689ad1..683ad649 100644
--- a/build.xml
+++ b/build.xml
@@ -122,7 +122,9 @@
 
 
 	<target name="appbundle" depends="fatjar" description="Build an OSX application bundle">
-		<taskdef name="jarbundler" classname="net.sourceforge.jarbundler.JarBundler" />
+		<taskdef name="jarbundler" classname="net.sourceforge.jarbundler.JarBundler">
+			<classpath path="${dir.installer}/appbundle/jarbundler.jar" />
+		</taskdef>
 
 		<!-- build app bundle folder and add native libs -->
 		<jarbundler dir="${dir.dist}" name="${title}" version="${version}" icon="${dir.installer}/appbundle/icon.icns" bundleid="net.sourceforge.filebot" jar="${path.fatjar}" stubfile="${dir.installer}/appbundle/JavaApplicationStub" workingdirectory="$APP_PACKAGE/Contents/Resources/Java" mainclass="net.sourceforge.filebot.Main" jvmversion="1.6+" vmoptions="-Xmx256m" />
diff --git a/installer/appbundle/jarbundler.jar b/installer/appbundle/jarbundler.jar
new file mode 100644
index 00000000..51279879
Binary files /dev/null and b/installer/appbundle/jarbundler.jar differ