diff --git a/vncviewer/CConn.h b/vncviewer/CConn.h
index 1b92937..06e3040 100644
--- a/vncviewer/CConn.h
+++ b/vncviewer/CConn.h
@@ -81,6 +81,8 @@
 
   static void handleOptions(void *data);
 
+  static void handleUpdateTimeout(void *data);
+
 private:
   char* serverHost;
   int serverPort;