diff --git a/unix/vncviewer/CConn.cxx b/unix/vncviewer/CConn.cxx
index 556d058..406e167 100644
--- a/unix/vncviewer/CConn.cxx
+++ b/unix/vncviewer/CConn.cxx
@@ -71,7 +71,8 @@
   setShared(shared);
   addSecType(secTypeNone);
   addSecType(secTypeVncAuth);
-  security->upg = this; /* Security instance is created in CConnection costructor. */
+  addSecType(secTypeVeNCrypt);
+  CSecurity::upg = this; /* Security instance is created in CConnection costructor. */
 
   CharArray encStr(preferredEncoding.getData());
   int encNum = encodingNum(encStr.buf);