diff --git a/modules/tools/debugger/config.el b/modules/tools/debugger/config.el
index d406a01c5..f75993866 100644
--- a/modules/tools/debugger/config.el
+++ b/modules/tools/debugger/config.el
@@ -90,7 +90,8 @@
            (process (get-buffer-process cmd-buf)))
       (cond ((and process (eq 'run (process-status process)))
              (pop-to-buffer cmd-buf)
-             (define-key evil-emacs-state-local-map (kbd "ESC ESC") #'+debugger/quit)
+             (when (boundp 'evil-emacs-state-local-map)
+               (define-key evil-emacs-state-local-map (kbd "ESC ESC") #'+debugger/quit))
              (realgud:track-set-debugger debugger-name)
              (realgud-cmdbuf-info-in-debugger?= 't)
              (realgud-cmdbuf-info-cmd-args= cmd-args)