diff --git a/build.xml b/build.xml
index 326a4af9917..8150c68078f 100644
--- a/build.xml
+++ b/build.xml
@@ -59,7 +59,7 @@
         <jar destfile="${output}/kotlin-runtime.jar">
             <fileset dir="${output}/classes/runtime"/>
             <fileset dir="${output}/classes/stdlib"/>
-            <fileset dir="${basedir}" includes="stdlib/ktSrc/**/*"/>
+            <fileset dir="${basedir}/stdlib/ktSrc/" includes="**/*"/>
         </jar>
     </target>