diff --git a/.emacs.d/init.el b/.emacs.d/init.el
index 2eee05b..1a37f7e 100644
--- a/.emacs.d/init.el
+++ b/.emacs.d/init.el
@@ -153,6 +153,8 @@
 ;; image-dired
 (package-install 'image-dired)
 (global-set-key (kbd "C-c i") 'image-dired)
+(add-hook 'image-dired-thumbnail-mode-hook #'(lambda ()
+  (keymap-local-set "M-RET" 'image-dired-display-this)))
 
 ;; magit
 (package-install 'magit)