diff --git a/java_gen/templates/of_class.java b/java_gen/templates/of_class.java
index 772858a..9665c49 100644
--- a/java_gen/templates/of_class.java
+++ b/java_gen/templates/of_class.java
@@ -148,8 +148,8 @@
         }
     }
 
-    public int writeTo(ChannelBuffer bb) {
-        return WRITER.write(bb, this);
+    public void writeTo(ChannelBuffer bb) {
+        WRITER.write(bb, this);
     }
 
     final static Writer WRITER = new Writer();