diff --git a/common/rfb/ConnParams.h b/common/rfb/ConnParams.h
index f00b1d6..bdd9cf2 100644
--- a/common/rfb/ConnParams.h
+++ b/common/rfb/ConnParams.h
@@ -73,6 +73,7 @@
     bool supportsLocalCursor;
     bool supportsLocalXCursor;
     bool supportsDesktopResize;
+    bool supportsExtendedDesktopSize;
     bool supportsDesktopRename;
     bool supportsLastRect;