diff --git a/which-key.el b/which-key.el
index 56dad94e3c2..6545026c7f2 100644
--- a/which-key.el
+++ b/which-key.el
@@ -579,7 +579,6 @@ used.")
 (defvar which-key--current-show-keymap-name nil)
 (defvar which-key--prior-show-keymap-args nil)
 (defvar which-key--previous-frame-size nil)
-(defvar which-key--last-replace-key nil)
 (defvar which-key--prefix-title-alist nil)
 (defvar which-key--debug nil)