diff --git a/modules/lang/csharp/config.el b/modules/lang/csharp/config.el
index 94f64cc61..e0fe64a49 100644
--- a/modules/lang/csharp/config.el
+++ b/modules/lang/csharp/config.el
@@ -50,8 +50,10 @@ or terminating simple string."
   :defer t
   :init
   (add-hook 'csharp-mode-local-vars-hook #'tree-sitter! 'append)
-  (if (fboundp #'csharp-tree-sitter-mode)
-      (add-to-list 'auto-mode-alist '("\\.cs\\'" . csharp-tree-sitter-mode))))
+  (when (fboundp #'csharp-tree-sitter-mode)
+    (add-to-list 'auto-mode-alist '("\\.cs\\'" . csharp-tree-sitter-mode))
+    (when (modulep! +lsp)
+      (add-hook 'csharp-tree-sitter-mode-local-vars-hook #'lsp! 'append))))
 
 
 ;; Unity shaders