diff --git a/src/etc/testcases/taskdefs/optional/junit.xml b/src/etc/testcases/taskdefs/optional/junit.xml
index 82f2d445d..cc66e20e5 100644
--- a/src/etc/testcases/taskdefs/optional/junit.xml
+++ b/src/etc/testcases/taskdefs/optional/junit.xml
@@ -343,7 +343,7 @@
     <condition property="source" value="6">
       <isset property="jdk1.6+"/>
     </condition>
-    <property name="source" value="1.4"/>
+    <property name="source" value="5"/>
     <javac srcdir="${tmp.dir}" destdir="${tmp.dir}" includes="T1.java,T2.java"
            source="${source}">