diff --git a/changelog.html b/changelog.html
index 6acbb593284bfa92df893ee2a855f852d59b3a33..52cc31c306a551622fa65b8a11d69aa6484aed4c 100644
--- a/changelog.html
+++ b/changelog.html
@@ -68,6 +68,9 @@ Upcoming changes</a>
     Added two new CLI commands "wait-node-online" and "wait-node-offline" to block until a slave becomes online/offline.
   <li class=rfe>
     Move Jenkins URL setting from E-mail Notification to its own section in the main configuration.
+  <li class=rfe>
+    Add LOADING overlay when triggering a build with parameters
+    (<a href="http://issues.jenkins-ci.org/browse/JENKINS-9343">issue 9343</a>)
 </ul>
 </div><!--=TRUNK-END=-->
 
diff --git a/core/src/main/resources/hudson/model/ParametersDefinitionProperty/index.jelly b/core/src/main/resources/hudson/model/ParametersDefinitionProperty/index.jelly
index 09507388a2a318fdb1263deb0c6a86eb7f07970b..4082caf350e70b7c2cedfbeaa5e310b8c36feae5 100644
--- a/core/src/main/resources/hudson/model/ParametersDefinitionProperty/index.jelly
+++ b/core/src/main/resources/hudson/model/ParametersDefinitionProperty/index.jelly
@@ -36,6 +36,7 @@ THE SOFTWARE.
   <l:layout title="${it.displayName}">
     <st:include page="sidepanel.jelly" it="${it.project}" />
     <l:main-panel>
+      <div class="behavior-loading">${%LOADING}</div>
       <h1>${it.owner.pronoun} ${it.owner.displayName}</h1>
       <p>${%description}</p>
       <j:set var="delay" value="${request.getParameter('delay')}" />