diff --git a/codec-http/src/main/java/io/netty/handler/codec/http/HttpObjectAggregator.java b/codec-http/src/main/java/io/netty/handler/codec/http/HttpObjectAggregator.java
index 29782482f1..34ae5e07ee 100644
--- a/codec-http/src/main/java/io/netty/handler/codec/http/HttpObjectAggregator.java
+++ b/codec-http/src/main/java/io/netty/handler/codec/http/HttpObjectAggregator.java
@@ -35,8 +35,9 @@ import static io.netty.handler.codec.http.HttpHeaders.*;
 
 /**
  * A {@link ChannelHandler} that aggregates an {@link HttpMessage}
- * and its following {@link HttpContent}s into a single {@link HttpMessage} with
- * no following {@link HttpContent}s.  It is useful when you don't want to take
+ * and its following {@link HttpContent}s into a single {@link FullHttpRequest}
+ * or {@link FullHttpResponse} (depending on if it used to handle requests or responses)
+ * with no following {@link HttpContent}s.  It is useful when you don't want to take
  * care of HTTP messages whose transfer encoding is 'chunked'.  Insert this
  * handler after {@link HttpObjectDecoder} in the {@link ChannelPipeline}:
  * <pre>
@@ -48,6 +49,8 @@ import static io.netty.handler.codec.http.HttpHeaders.*;
  * ...
  * p.addLast("handler", new HttpRequestHandler());
  * </pre>
+ * Be aware that you need to have the {@link HttpResponseEncoder} or {@link HttpRequestEncoder}
+ * before the {@link HttpObjectAggregator} in the {@link ChannelPipeline}.
  */
 public class HttpObjectAggregator extends MessageToMessageDecoder<HttpObject> {