diff --git a/common/rfb/TightDecoder.h b/common/rfb/TightDecoder.h
index 18b01f8..2ca4ecd 100644
--- a/common/rfb/TightDecoder.h
+++ b/common/rfb/TightDecoder.h
@@ -28,7 +28,7 @@
   class TightDecoder : public Decoder {
 
   public:
-    TightDecoder(CMsgReader* reader);
+    TightDecoder(CConnection* conn);
     virtual ~TightDecoder();
     virtual void readRect(const Rect& r, CMsgHandler* handler);