diff --git a/hbase-http/src/main/java/org/apache/hadoop/hbase/http/ProfileServlet.java b/hbase-http/src/main/java/org/apache/hadoop/hbase/http/ProfileServlet.java
index 4e3048438424..df8d00928239 100644
--- a/hbase-http/src/main/java/org/apache/hadoop/hbase/http/ProfileServlet.java
+++ b/hbase-http/src/main/java/org/apache/hadoop/hbase/http/ProfileServlet.java
@@ -74,6 +74,7 @@ public class ProfileServlet extends HttpServlet {
 
   enum Event {
     CPU("cpu"),
+    WALL("wall"),
     ALLOC("alloc"),
     LOCK("lock"),
     PAGE_FAULTS("page-faults"),