diff --git a/test/expand.vim b/test/expand.vim
index 19cd766..20d0542 100644
--- a/test/expand.vim
+++ b/test/expand.vim
@@ -74,13 +74,13 @@ function! s:suite.custom_void_string()
   let g:lightline = { 'component_expand': { 'custom': 'Custom' } }
   call lightline#init()
   call s:assert.equals(SID('expand')([['readonly', 'filename'], ['custom'], ['modified']]),
-        \ [[['readonly', 'filename'], [], ['modified']], [[0, 0], [], [0]], [0, 1, 2, 3]])
+        \ [[['readonly', 'filename'], ['modified']], [[0, 0], [0]], [0, 2, 3]])
   call s:assert.equals(SID('expand')([['readonly', 'filename', 'custom', 'modified']]),
         \ [[['readonly', 'filename', 'modified']], [[0, 0, 0]], [0, 1]])
   delfunction Custom
 endfunction
 
-function! s:suite.custom_void_string()
+function! s:suite.custom_type_void_string()
   function! Custom()
     return ''
   endfunction