diff --git a/common/rfb/RREDecoder.h b/common/rfb/RREDecoder.h
index 3bed62b..f89fef4 100644
--- a/common/rfb/RREDecoder.h
+++ b/common/rfb/RREDecoder.h
@@ -27,7 +27,10 @@
     RREDecoder();
     virtual ~RREDecoder();
     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