diff --git a/omnisharp.el b/omnisharp.el
index 0c639f12..574828db 100644
--- a/omnisharp.el
+++ b/omnisharp.el
@@ -32,7 +32,7 @@
 
 (require 'cl)
 (require 'cl-lib)
-(require 'csharp-mode)
+(unless (version< "29" emacs-version) (require 'csharp-mode))
 (require 'json)
 (require 'files)
 (require 'ido)