diff --git a/rfbplayer/rfbplayer.cxx b/rfbplayer/rfbplayer.cxx
index a9931cc..5fb5b16 100644
--- a/rfbplayer/rfbplayer.cxx
+++ b/rfbplayer/rfbplayer.cxx
@@ -766,6 +766,10 @@
     si.nPos   = scrolloffset.x;
     SetScrollInfo(getFrameHandle(), SB_HORZ, &si, TRUE);
   }
+
+  // Update the cached client size
+  GetClientRect(getFrameHandle(), &r);
+  client_size = Rect(r.left, r.top, r.right, r.bottom);
 }
 
 bool RfbPlayer::setViewportOffset(const Point& tl) {