diff --git a/src/tests/antunit/taskdefs/zip-test.xml b/src/tests/antunit/taskdefs/zip-test.xml
index 6f0d77c0e..4dedd6cc5 100644
--- a/src/tests/antunit/taskdefs/zip-test.xml
+++ b/src/tests/antunit/taskdefs/zip-test.xml
@@ -115,6 +115,7 @@
       <copy file="${output}/jar.jar" tofile="${output}/reference.jar"/>
 
       <mkdir dir="${input}/y"/>
+      <sleep seconds="2"/>
       <jar jarfile="${output}/jar.jar">
         <fileset dir="${input}"/>
       </jar>