diff --git a/build.xml b/build.xml
index a4597bfadfa..749f4e1aac6 100644
--- a/build.xml
+++ b/build.xml
@@ -141,12 +141,17 @@
         </if>
     </target>
 
-    <target name="jslib">
-      <jar jarfile="${kotlin-home}/lib/kotlin-jslib.jar">
-        <fileset dir = "${basedir}/js/js.libraries/src"/>
-      </jar>
-      <copy file="${basedir}/js/js.translator/testFiles/kotlinFullLib_ecma3.js" tofile="${kotlin-home}/lib/kotlinLib.js"/>
-    </target>
+  <target name="jslib">
+    <jar jarfile="${kotlin-home}/lib/kotlin-jslib.jar">
+      <fileset dir="${basedir}/js/js.libraries/src">
+        <include name="core/**"/>
+        <include name="jquery/**"/>
+        <include name="dom/**"/>
+        <include name="html5/**"/>
+      </fileset>
+    </jar>
+    <copy file="${basedir}/js/js.translator/testFiles/kotlinFullLib_ecma3.js" tofile="${kotlin-home}/lib/kotlinLib.js"/>
+  </target>
 
     <target name="compiler">
         <taskdef name="jarjar" classname="com.tonicsystems.jarjar.JarJarTask" classpath="${basedir}/dependencies/jarjar.jar"/>