diff --git a/src/testdir/test_vim9_expr.vim b/src/testdir/test_vim9_expr.vim
index dc6858f..6b51bc7 100644
--- a/src/testdir/test_vim9_expr.vim
+++ b/src/testdir/test_vim9_expr.vim
@@ -2961,6 +2961,10 @@
 
       var Join = (l) => join(l, 'x')
       assert_equal('axb', ['a', 'b']->(Join)())
+      
+      var sorted = [3, 1, 2]
+                    -> sort()
+      assert_equal([1, 2, 3], sorted)
   END
   CheckDefAndScriptSuccess(lines)
 enddef