diff --git a/core/src/main/resources/org/apache/spark/ui/static/additional-metrics.js b/core/src/main/resources/org/apache/spark/ui/static/additional-metrics.js
index 3c8ddddf07b1..3798dc47529a 100644
--- a/core/src/main/resources/org/apache/spark/ui/static/additional-metrics.js
+++ b/core/src/main/resources/org/apache/spark/ui/static/additional-metrics.js
@@ -83,8 +83,8 @@ $(function() {
         $(this).parent().find('input[type="checkbox"]').trigger('click');
     });
 
-    // Trigger a double click on the span to show full job description.
-    $(".description-input").dblclick(function() {
-        $(this).removeClass("description-input").addClass("description-input-full");
+    // Show/hide full job description on click event.
+    $(".description-input").click(function() {
+        $(this).toggleClass("description-input-full");
     });
 });