diff --git a/lisp/term.el b/lisp/term.el
index f0470d806cd..69681f706c0 100644
--- a/lisp/term.el
+++ b/lisp/term.el
@@ -860,6 +860,7 @@ is buffer-local."
     (define-key map [prior] 'term-send-prior)
     (define-key map [next] 'term-send-next)
     (define-key map [xterm-paste] #'term--xterm-paste)
+    (define-key map [?\C-/] #'term-send-C-_)
     map)
   "Keyboard map for sending characters directly to the inferior process.")
 
@@ -1282,6 +1283,7 @@ without any interpretation."
 (defun term-send-next  () (interactive) (term-send-raw-string "\e[6~"))
 (defun term-send-del   () (interactive) (term-send-raw-string "\e[3~"))
 (defun term-send-backspace  () (interactive) (term-send-raw-string "\C-?"))
+(defun term-send-C-_  () (interactive) (term-send-raw-string "\C-_"))
 
 (defun term-char-mode ()
   "Switch to char (\"raw\") sub-mode of term mode.