diff --git a/common/rfb/encodings.h b/common/rfb/encodings.h
index 40f5f10..84844c5 100644
--- a/common/rfb/encodings.h
+++ b/common/rfb/encodings.h
@@ -36,6 +36,7 @@
   const int pseudoEncodingDesktopSize = -223;
   const int pseudoEncodingExtendedDesktopSize = -308;
   const int pseudoEncodingDesktopName = -307;
+  const int pseudoEncodingFence = -312;
 
   // TightVNC-specific
   const int pseudoEncodingLastRect = -224;