diff --git a/src/org/javacc/parser/build.xml b/src/org/javacc/parser/build.xml
index 1c66748..5b67545 100644
--- a/src/org/javacc/parser/build.xml
+++ b/src/org/javacc/parser/build.xml
@@ -42,7 +42,8 @@ designated nationals lists is strictly prohibited.
     <javac srcdir="${javacc.root}/src"
            destdir="${javacc.root}/classes"
            debug="${build.compiler.debug}"
-           classpath="${javacc.root}/classes">
+           classpath="${javacc.root}/classes"
+           target="1.4">
     </javac>
   </target>