diff --git a/Source/kwsys/Terminal.c b/Source/kwsys/Terminal.c
index 3bf257996..7a3266f5e 100644
--- a/Source/kwsys/Terminal.c
+++ b/Source/kwsys/Terminal.c
@@ -160,6 +160,7 @@ static const char* kwsysTerminalVT100Names[] =
   "rxvt-cygwin",
   "rxvt-cygwin-native",
   "rxvt-unicode",
+  "rxvt-unicode-256color",
   "screen",
   "screen-256color",
   "screen-bce",