diff --git a/unix/xserver/hw/vnc/InputXKB.cc b/unix/xserver/hw/vnc/InputXKB.cc
index 65c4400..6fca362 100644
--- a/unix/xserver/hw/vnc/InputXKB.cc
+++ b/unix/xserver/hw/vnc/InputXKB.cc
@@ -43,7 +43,8 @@
 }
 
 #if XORG < 19
-static DevPrivateKey vncXkbScreenPrivateKey = &vncXkbScreenPrivateKey;
+static int vncXkbScreenPrivateKeyIndex;
+static DevPrivateKey vncXkbScreenPrivateKey = &vncXkbScreenPrivateKeyIndex;
 #else
 static DevPrivateKeyRec vncXkbPrivateKeyRec;
 #define vncXkbScreenPrivateKey (&vncXkbPrivateKeyRec)