diff --git a/core/src/main/resources/hudson/widgets/HistoryWidget/entry.jelly b/core/src/main/resources/hudson/widgets/HistoryWidget/entry.jelly
index 31dbb322fbd0..ff358f224a5e 100644
--- a/core/src/main/resources/hudson/widgets/HistoryWidget/entry.jelly
+++ b/core/src/main/resources/hudson/widgets/HistoryWidget/entry.jelly
@@ -45,7 +45,7 @@ THE SOFTWARE.
         <a class="model-link inside build-link display-name" update-parent-class=".build-row" href="${link}">${build.displayName}</a>
       </div>
       <div class="pane build-details" time="${build.timestamp.time.time}">
-        <j:set var="linkTitleAttr" value=""/> 
+        <j:set var="linkTitleAttr" value="${null}"/>
         <j:if test="${!build.building}">
           <j:set var="linkTitleAttr">${%Took} ${build.durationString}</j:set>
         </j:if>