diff --git a/unix/x0vncserver/PollingManager.h b/unix/x0vncserver/PollingManager.h
index cedac1a..015b3ca 100644
--- a/unix/x0vncserver/PollingManager.h
+++ b/unix/x0vncserver/PollingManager.h
@@ -27,6 +27,7 @@
 #include <rfb/VNCServer.h>
 
 #include <x0vncserver/Image.h>
+#include <x0vncserver/XPixelBuffer.h>
 
 #ifdef DEBUG
 #include <x0vncserver/TimeMillis.h>
@@ -38,7 +39,7 @@
 
 public:
 
-  PollingManager(Display *dpy, Image *image, ImageFactory *factory,
+  PollingManager(Display *dpy, XPixelBuffer *buffer, ImageFactory *factory,
                  int offsetLeft = 0, int offsetTop = 0);
   virtual ~PollingManager();