diff --git a/jetty-server/src/main/java/org/eclipse/jetty/server/session/DefaultSessionCache.java b/jetty-server/src/main/java/org/eclipse/jetty/server/session/DefaultSessionCache.java
index acef8b434b4d..93aa8c7b8793 100644
--- a/jetty-server/src/main/java/org/eclipse/jetty/server/session/DefaultSessionCache.java
+++ b/jetty-server/src/main/java/org/eclipse/jetty/server/session/DefaultSessionCache.java
@@ -195,11 +195,4 @@ public boolean doReplace(String id, Session oldValue, Session newValue)
     {
         return _sessions.replace(id, oldValue, newValue);
     }
-
-    @Override
-    protected void doStart() throws Exception
-    {
-        Objects.requireNonNull(_sessions, "Session Map may not be null");
-        super.doStart();
-    }
 }