diff --git a/java/which.xml b/java/which.xml
index dd2d6b0..f8e7c16 100644
--- a/java/which.xml
+++ b/java/which.xml
@@ -69,7 +69,8 @@ Build file for org.apache.env.Which service. No dependencies.
   <target name="compile" depends="init"
     description="Compile all classes">
    <javac srcdir="${src.dir}" destdir="${build.classes.dir}" 
-       includes="${env.subdir}/*.java" />
+       includes="${env.subdir}/*.java"
+          target="1.4"/>
   </target>
 
   <target name="jar" depends="compile"