diff -up ./ui/vnc-enc-tight.c.orig0 ./ui/vnc-enc-tight.c
--- ./ui/vnc-enc-tight.c.orig0	2011-03-15 03:53:22.000000000 +0100
+++ ./ui/vnc-enc-tight.c	2011-03-20 12:14:48.013560009 +0100
@@ -849,7 +849,7 @@ static int tight_compress_data(VncState 
                                int level, int strategy)
 {
     z_streamp zstream = &vs->tight.stream[stream_id];
-    int previous_out;
+    uLong previous_out;
 
     if (bytes < VNC_TIGHT_MIN_TO_COMPRESS) {
         vnc_write(vs, vs->tight.tight.buffer, vs->tight.tight.offset);