diff --git a/jetty-io/src/main/java/org/eclipse/jetty/io/nio/SelectChannelEndPoint.java b/jetty-io/src/main/java/org/eclipse/jetty/io/nio/SelectChannelEndPoint.java
index ffbcc163e12..9428a483a00 100644
--- a/jetty-io/src/main/java/org/eclipse/jetty/io/nio/SelectChannelEndPoint.java
+++ b/jetty-io/src/main/java/org/eclipse/jetty/io/nio/SelectChannelEndPoint.java
@@ -323,9 +323,8 @@ public class SelectChannelEndPoint extends ChannelEndPoint implements AsyncEndPo
         {
             synchronized (this)
             {
-                _writable=false;
-                if (!_dispatched)
-                    updateKey();
+                if (_dispatched)
+                    _writable=false;
             }
         }
         else if (l>0)
@@ -349,9 +348,8 @@ public class SelectChannelEndPoint extends ChannelEndPoint implements AsyncEndPo
         {
             synchronized (this)
             {
-                _writable=false;
-                if (!_dispatched)
-                    updateKey();
+                if (_dispatched)
+                    _writable=false;
             }
         }
         else if (l>0)