diff -up tigervnc-1.3.0/vncviewer/Viewport.cxx.cursor tigervnc-1.3.0/vncviewer/Viewport.cxx
--- tigervnc-1.3.0/vncviewer/Viewport.cxx.cursor 2013-12-17 13:28:23.170400013 +0000
+++ tigervnc-1.3.0/vncviewer/Viewport.cxx 2013-12-17 13:29:46.095784064 +0000
@@ -931,7 +931,7 @@ void Viewport::popupContextMenu()
// Back to our proper mouse pointer.
#ifdef HAVE_FLTK_CURSOR
- if (Fl::belowmouse() == this)
+ if (Fl::belowmouse() == this && cursor)
window()->cursor(cursor, cursorHotspot.x, cursorHotspot.y);
#endif