diff --git a/xc/programs/Xserver/vnc/Xvnc/xvnc.cc b/xc/programs/Xserver/vnc/Xvnc/xvnc.cc
index 35c62bd..bb7cfcc 100644
--- a/xc/programs/Xserver/vnc/Xvnc/xvnc.cc
+++ b/xc/programs/Xserver/vnc/Xvnc/xvnc.cc
@@ -708,7 +708,7 @@
 
     pXWDCmap = vfbScreens[pmap->pScreen->myNum].pXWDCmap;
 
-    if ((pmap->pVisual->class | DynamicClass) == DirectColor)
+    if ((pmap->pVisual->c_class | DynamicClass) == DirectColor)
     {
 	return;
     }