diff --git a/codec-http2/src/main/java/io/netty/handler/codec/http2/Http2FrameCodecBuilder.java b/codec-http2/src/main/java/io/netty/handler/codec/http2/Http2FrameCodecBuilder.java
index 3a5a43f72a..59f43d8db5 100644
--- a/codec-http2/src/main/java/io/netty/handler/codec/http2/Http2FrameCodecBuilder.java
+++ b/codec-http2/src/main/java/io/netty/handler/codec/http2/Http2FrameCodecBuilder.java
@@ -29,7 +29,16 @@ public class Http2FrameCodecBuilder extends
 
     private Http2FrameWriter frameWriter;
 
-    public Http2FrameCodecBuilder() {
+    /**
+     * Allows overriding behavior of existing builder.
+     * <p>
+     * Users of this constructor are responsible for invoking {@link #server(boolean)} method or overriding
+     * {@link #isServer()} method to give the builder information if the {@link Http2Connection}(s) it creates are in
+     * server or client mode.
+     *
+     * @see AbstractHttp2ConnectionHandlerBuilder
+     */
+    protected Http2FrameCodecBuilder() {
     }
 
     Http2FrameCodecBuilder(boolean server) {