diff --git a/docs/spark-standalone.md b/docs/spark-standalone.md
index 1c0b60f7b9346..34ced9ed7b462 100644
--- a/docs/spark-standalone.md
+++ b/docs/spark-standalone.md
@@ -242,7 +242,7 @@ SPARK_WORKER_OPTS supports the following system properties:
 </tr>
 <tr>
   <td><code>spark.worker.cleanup.appDataTtl</code></td>
-  <td>7 * 24 * 3600 (7 days)</td>
+  <td>604800 (7 days, 7 * 24 * 3600)</td>
   <td>
     The number of seconds to retain application work directories on each worker.  This is a Time To Live
     and should depend on the amount of available disk space you have.  Application logs and jars are