diff --git a/src/main/java/io/netty/incubator/codec/http3/Http3FrameToHttpObjectCodec.java b/src/main/java/io/netty/incubator/codec/http3/Http3FrameToHttpObjectCodec.java
index c7b5058..33bce51 100644
--- a/src/main/java/io/netty/incubator/codec/http3/Http3FrameToHttpObjectCodec.java
+++ b/src/main/java/io/netty/incubator/codec/http3/Http3FrameToHttpObjectCodec.java
@@ -134,7 +134,7 @@ protected void channelInputClosed(ChannelHandlerContext ctx) throws Exception {
     @Override
     public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) throws Exception {
         if (!(msg instanceof HttpObject)) {
-            throw new UnsupportedMessageTypeException();
+            throw new UnsupportedMessageTypeException(msg, HttpObject.class);
         }
         // 100-continue is typically a FullHttpResponse, but the decoded
         // Http3HeadersFrame should not handles as a end of stream.