diff --git a/build.xml b/build.xml
index 7db866e4eb5..b6b32059e3c 100644
--- a/build.xml
+++ b/build.xml
@@ -68,7 +68,7 @@
       <fileset dir="lucene" includes="build.xml" />
       <fileset dir="solr" includes="build.xml" />
     </subant>
-    <subant target="check-lib-versions" antfile="lucene/build.xml" inheritall="false" failonerror="true"/>
+    <subant buildpath="lucene" target="check-lib-versions" inheritall="false" failonerror="true"/>
   </target>
   
   <target name="-validate-source-patterns" unless="disable.source-patterns">