diff --git a/win/vncviewer/CConn.cxx b/win/vncviewer/CConn.cxx
index 6a6561d..b34b56e 100644
--- a/win/vncviewer/CConn.cxx
+++ b/win/vncviewer/CConn.cxx
@@ -172,6 +172,8 @@
     if (!options.useLocalCursor)
       window->setCursor(0, 0, Point(), 0, 0);
   }
+
+  security->SetSecTypes(options.secTypes);
 }