diff --git a/codec-http/src/main/java/io/netty/handler/codec/http/HttpRequestEncoder.java b/codec-http/src/main/java/io/netty/handler/codec/http/HttpRequestEncoder.java
index 4e7e2bf0a6..b1e1df22ce 100644
--- a/codec-http/src/main/java/io/netty/handler/codec/http/HttpRequestEncoder.java
+++ b/codec-http/src/main/java/io/netty/handler/codec/http/HttpRequestEncoder.java
@@ -28,7 +28,7 @@ public class HttpRequestEncoder extends HttpObjectEncoder<HttpRequest> {
     private static final char SLASH = '/';
 
     @Override
-    public boolean acceptOutboundMessage(Object msg) throws Exception {
+    protected boolean acceptOutboundMessage(Object msg) throws Exception {
         return super.acceptOutboundMessage(msg) && !(msg instanceof HttpResponse);
     }
 
diff --git a/codec-http/src/main/java/io/netty/handler/codec/http/HttpResponseEncoder.java b/codec-http/src/main/java/io/netty/handler/codec/http/HttpResponseEncoder.java
index 9d953900d0..7b30d0000d 100644
--- a/codec-http/src/main/java/io/netty/handler/codec/http/HttpResponseEncoder.java
+++ b/codec-http/src/main/java/io/netty/handler/codec/http/HttpResponseEncoder.java
@@ -27,7 +27,7 @@ import static io.netty.handler.codec.http.HttpConstants.*;
 public class HttpResponseEncoder extends HttpObjectEncoder<HttpResponse> {
 
     @Override
-    public boolean acceptOutboundMessage(Object msg) throws Exception {
+    protected boolean acceptOutboundMessage(Object msg) throws Exception {
         return super.acceptOutboundMessage(msg) && !(msg instanceof HttpRequest);
     }
 
diff --git a/transport/src/main/java/io/netty/channel/ChannelOutboundMessageHandlerAdapter.java b/transport/src/main/java/io/netty/channel/ChannelOutboundMessageHandlerAdapter.java
index 678593c032..c75a2d0889 100644
--- a/transport/src/main/java/io/netty/channel/ChannelOutboundMessageHandlerAdapter.java
+++ b/transport/src/main/java/io/netty/channel/ChannelOutboundMessageHandlerAdapter.java
@@ -72,7 +72,7 @@ public abstract class ChannelOutboundMessageHandlerAdapter<I>
      *
      * @param msg the message
      */
-    public boolean acceptOutboundMessage(Object msg) throws Exception {
+    protected boolean acceptOutboundMessage(Object msg) throws Exception {
         return msgMatcher.match(msg);
     }