diff --git a/lisp/emacs-lisp/rmc.el b/lisp/emacs-lisp/rmc.el
index 27e5d6c612b..c4df8cf2f98 100644
--- a/lisp/emacs-lisp/rmc.el
+++ b/lisp/emacs-lisp/rmc.el
@@ -216,8 +216,14 @@ Usage example:
                                     (car elem)))
                             prompt-choices)))
                   (condition-case nil
-                      (let ((cursor-in-echo-area t))
-                        (read-event))
+                      (let ((cursor-in-echo-area t)
+                            ;; Do NOT use read-event here.  That
+                            ;; function does not consult
+                            ;; input-decode-map (bug#75886).
+                            (key (read-key)))
+                        (when (eq key ?\C-g)
+                          (signal 'quit nil))
+                        key)
                     (error nil))))
           (if (memq (car-safe tchar) '(touchscreen-begin
                                        touchscreen-end
diff --git a/test/lisp/emacs-lisp/rmc-tests.el b/test/lisp/emacs-lisp/rmc-tests.el
index 1bc8c90cad6..0237bc3f9e5 100644
--- a/test/lisp/emacs-lisp/rmc-tests.el
+++ b/test/lisp/emacs-lisp/rmc-tests.el
@@ -61,7 +61,7 @@
 
 (ert-deftest test-read-multiple-choice ()
   (dolist (char '(?y ?n))
-    (cl-letf* (((symbol-function #'read-event) (lambda () char))
+    (cl-letf* (((symbol-function #'read-key) (lambda () char))
                (str (if (eq char ?y) "yes" "no")))
       (should (equal (list char str)
                      (read-multiple-choice "Do it? " '((?y "yes") (?n "no"))))))))
@@ -69,7 +69,7 @@
 (ert-deftest test-read-multiple-choice-help ()
   (let ((chars '(?o ?a))
         help)
-    (cl-letf* (((symbol-function #'read-event)
+    (cl-letf* (((symbol-function #'read-key)
                 (lambda ()
                   (message "chars %S" chars)
                   (when (= 1 (length chars))