diff --git a/src/testdir/test_terminal.vim b/src/testdir/test_terminal.vim
index b6c926f..573db1e 100644
--- a/src/testdir/test_terminal.vim
+++ b/src/testdir/test_terminal.vim
@@ -489,22 +489,22 @@
 endfunc
 
 func Test_terminal_write_stdin()
-  " Todo: make this work on all systems.
-  if !has('unix')
+  if !executable('wc')
+    call ch_log('Test_terminal_write_stdin() is skipped because system doesn''t have wc command')
     return
   endif
   new
   call setline(1, ['one', 'two', 'three'])
   %term wc
   call WaitFor('getline(1) != ""')
-  let nrs = split(getline(1))
+  let nrs = split(getline('$'))
   call assert_equal(['3', '3', '14'], nrs)
   bwipe
 
   call setline(1, ['one', 'two', 'three', 'four'])
   2,3term wc
   call WaitFor('getline(1) != ""')
-  let nrs = split(getline(1))
+  let nrs = split(getline('$'))
   call assert_equal(['2', '2', '10'], nrs)
   bwipe