diff --git a/java_gen/templates/of_virtual_class.java b/java_gen/templates/of_virtual_class.java
index 2c31c75..d785838 100644
--- a/java_gen/templates/of_virtual_class.java
+++ b/java_gen/templates/of_virtual_class.java
@@ -50,7 +50,7 @@
 
     static class Reader implements OFMessageReader<${msg.interface.inherited_declaration()}> {
         @Override
-        public ${msg.interface.inherited_declaration()} readFrom(ChannelBuffer bb) throws OFParseError {
+        public ${msg.interface.inherited_declaration()} readFrom(ByteBuf bb) throws OFParseError {
 //:: if msg.is_fixed_length:
             if(bb.readableBytes() < LENGTH)
 //:: else: