diff --git a/common/rfb/RawEncoder.h b/common/rfb/RawEncoder.h
index 1b9ad92..34dba0b 100644
--- a/common/rfb/RawEncoder.h
+++ b/common/rfb/RawEncoder.h
@@ -25,7 +25,7 @@
   class RawEncoder : public Encoder {
   public:
     static Encoder* create(SMsgWriter* writer);
-    virtual bool writeRect(const Rect& r, ImageGetter* ig, Rect* actual);
+    virtual bool writeRect(const Rect& r, TransImageGetter* ig, Rect* actual);
     virtual ~RawEncoder();
   private:
     RawEncoder(SMsgWriter* writer);