diff --git a/common/rfb/Security.h b/common/rfb/Security.h
index edbcd44..3231f1f 100644
--- a/common/rfb/Security.h
+++ b/common/rfb/Security.h
@@ -44,6 +44,7 @@
   const rdr::U8 secTypeTight   = 16;
   const rdr::U8 secTypeUltra   = 17;
   const rdr::U8 secTypeTLS     = 18;
+  const rdr::U8 secTypeVeNCrypt= 19;
 
   // result types