diff --git a/lisp/init-elpa.el b/lisp/init-elpa.el
index c6bbf25a7c..c3a058193f 100644
--- a/lisp/init-elpa.el
+++ b/lisp/init-elpa.el
@@ -97,7 +97,6 @@ ARCHIVE is the string name of the package archive.")
     pointback
     buffer-move
     regex-tool
-    csharp-mode
     quack
     legalese
     htmlize
@@ -252,7 +251,6 @@ ARCHIVE is the string name of the package archive.")
 (require-package 'rinari)
 (require-package 'groovy-mode)
 (require-package 'ruby-compilation)
-(require-package 'csharp-mode)
 (require-package 'emmet-mode)
 (require-package 'session)
 ;; (require-package 'tidy)
diff --git a/lisp/init-ibuffer.el b/lisp/init-ibuffer.el
index 532b6fedbf..c9d37cb20d 100644
--- a/lisp/init-ibuffer.el
+++ b/lisp/init-ibuffer.el
@@ -31,7 +31,6 @@
                                 (mode . ruby-mode)
                                 (mode . scss-mode)
                                 (mode . css-mode)
-                                (mode . csharp-mode)
                                 (mode . objc-mode)
                                 (mode . sql-mode)
                                 (mode . python-mode)
diff --git a/lisp/init-misc.el b/lisp/init-misc.el
index 3bbf93d8ae..10d3b20818 100644
--- a/lisp/init-misc.el
+++ b/lisp/init-misc.el
@@ -33,9 +33,6 @@
 ;; M-x without meta
 (global-set-key (kbd "C-x C-m") 'execute-extended-command)
 
-;; C#
-(add-to-list 'auto-mode-alist '("\\.cs$" . csharp-mode))
-
 ;; {{ isearch
 ;; Use regex to search by default
 (global-set-key (kbd "C-s") 'isearch-forward-regexp)