diff --git a/src/testdir/test_method.vim b/src/testdir/test_method.vim
index 69adc30..b82dbb4 100644
--- a/src/testdir/test_method.vim
+++ b/src/testdir/test_method.vim
@@ -140,6 +140,10 @@
 
   " todo: lambda accepts more arguments than it consumes
   " call assert_fails('eval "text"->{x -> x .. " extended"}("more")', 'E99:')
+
+  let l = [1, 2, 3]
+  eval l->{x -> x}()
+  call assert_equal(1, test_refcount(l))
 endfunc
 
 func Test_method_not_supported()