diff --git a/win/vncviewer/CConn.cxx b/win/vncviewer/CConn.cxx
index 286c701..3d7f99a 100644
--- a/win/vncviewer/CConn.cxx
+++ b/win/vncviewer/CConn.cxx
@@ -23,7 +23,7 @@
 #include <vncviewer/CConnThread.h>
 #include <vncviewer/resource.h>
 #include <rfb/encodings.h>
-#include <rfb/secTypes.h>
+#include <rfb/Security.h>
 #include <rfb/CSecurityNone.h>
 #include <rfb/CSecurityVncAuth.h>
 #include <rfb/CMsgWriter.h>