diff --git a/test/lisp/progmodes/csharp-mode-tests.el b/test/lisp/progmodes/csharp-mode-tests.el
index 2878fa601f2..af06a918f6e 100644
--- a/test/lisp/progmodes/csharp-mode-tests.el
+++ b/test/lisp/progmodes/csharp-mode-tests.el
@@ -27,6 +27,7 @@
   (ert-test-erts-file (ert-resource-file "indent.erts")))
 
 (ert-deftest csharp-ts-mode-test-indentation ()
+  (skip-unless (treesit-ready-p 'c-sharp t))
   (ert-test-erts-file (ert-resource-file "indent-ts.erts")))
 
 (provide 'csharp-mode-tests)