diff --git a/core/src/main/scala/org/apache/spark/ui/jobs/JobProgressTab.scala b/core/src/main/scala/org/apache/spark/ui/jobs/JobProgressTab.scala
index 3308c8c8a3d3..3d23cb4ed64b 100644
--- a/core/src/main/scala/org/apache/spark/ui/jobs/JobProgressTab.scala
+++ b/core/src/main/scala/org/apache/spark/ui/jobs/JobProgressTab.scala
@@ -30,7 +30,7 @@ private[ui] class JobProgressTab(parent: SparkUI) extends WebUITab(parent, "stag
   val live = parent.live
   val sc = parent.sc
   val conf = if (live) sc.conf else new SparkConf
-  val killEnabled = conf.getBoolean("spark.ui.killEnabled", true)
+  val killEnabled = conf.getBoolean("spark.ui.killEnabled", false)
   val listener = new JobProgressListener(conf)
 
   attachPage(new JobProgressPage(this))
diff --git a/docs/configuration.md b/docs/configuration.md
index e7e1dd56cf12..7d552fe59ab6 100644
--- a/docs/configuration.md
+++ b/docs/configuration.md
@@ -201,7 +201,7 @@ Apart from these, the following properties are also available, and may be useful
 </tr>
 <tr>
   <td>spark.ui.killEnabled</td>
-  <td>true</td>
+  <td>false</td>
   <td>
     Allows stages and corresponding jobs to be killed from the web ui.
   </td>