diff --git a/lisp/term/vt200.el b/lisp/term/vt200.el
index 8ed3ee74cc5..31f64a0f8b2 100644
--- a/lisp/term/vt200.el
+++ b/lisp/term/vt200.el
@@ -1,3 +1,6 @@
-;; For our purposes we can treat the vt200 and vt100 alike.
-;; The differences are handled by the termcap entry.
+;; For our purposes we can treat the vt200 and vt100 almost alike.
+;; Most differences are handled by the termcap entry.
 (load "term/vt100" nil t)
+
+;; Make F11 an escape key.
+(define-key function-key-map "\e[23~" [?\e])