diff --git a/common/rfb/CSecurityVeNCrypt.cxx b/common/rfb/CSecurityVeNCrypt.cxx
index 3b77ed1..9c2ceba 100644
--- a/common/rfb/CSecurityVeNCrypt.cxx
+++ b/common/rfb/CSecurityVeNCrypt.cxx
@@ -36,7 +36,7 @@
 
 static LogWriter vlog("CVeNCrypt");
 
-CSecurityVeNCrypt::CSecurityVeNCrypt(Security* sec) : csecurity(NULL), security(sec)
+CSecurityVeNCrypt::CSecurityVeNCrypt(SecurityClient* sec) : csecurity(NULL), security(sec)
 {
   haveRecvdMajorVersion = false;
   haveRecvdMinorVersion = false;