diff --git a/rfb/ScaledPixelBuffer.h b/rfb/ScaledPixelBuffer.h
index 05a419d..723ce6e 100644
--- a/rfb/ScaledPixelBuffer.h
+++ b/rfb/ScaledPixelBuffer.h
@@ -32,6 +32,7 @@
   class ScaledPixelBuffer {
   public:
     ScaledPixelBuffer(U8 *data, int width, int height, int scale);
+    ScaledPixelBuffer();
     virtual ~ScaledPixelBuffer();
 
     // Get width, height, number of pixels and scale