diff --git a/common/rfb/CopyRectDecoder.h b/common/rfb/CopyRectDecoder.h
index a7195ce..998a509 100644
--- a/common/rfb/CopyRectDecoder.h
+++ b/common/rfb/CopyRectDecoder.h
@@ -27,7 +27,10 @@
     CopyRectDecoder();
     virtual ~CopyRectDecoder();
     virtual void readRect(const Rect& r, rdr::InStream* is,
-                          const ConnParams& cp, ModifiablePixelBuffer* pb);
+                          const ConnParams& cp, rdr::OutStream* os);
+    virtual void decodeRect(const Rect& r, const void* buffer,
+                            size_t buflen, const ConnParams& cp,
+                            ModifiablePixelBuffer* pb);
   };
 }
 #endif