diff --git a/win/winvnc/VNCServerWin32.h b/win/winvnc/VNCServerWin32.h
index 5b40a5a..1feae36 100644
--- a/win/winvnc/VNCServerWin32.h
+++ b/win/winvnc/VNCServerWin32.h
@@ -102,6 +102,7 @@
     rfb::Mutex commandLock;
     rfb::Condition commandSig;
     rfb::win32::Handle commandEvent;
+    rfb::win32::Handle sessionEvent;
 
     // VNCServerWin32 Server-internal state
     rfb::win32::SDisplay desktop;