diff --git a/test/highlight.vim b/test/highlight.vim
index 0e9e656..590536c 100644
--- a/test/highlight.vim
+++ b/test/highlight.vim
@@ -25,11 +25,11 @@ function! s:suite.highlight()
   let palette = lightline#palette()
   call s:assert.match(s:hi('LightlineLeft_normal_0'), s:pattern(palette.normal.left[0]))
   call s:assert.match(s:hi('LightlineLeft_normal_1'), s:pattern(palette.normal.left[1]))
-  call s:assert.match(s:hi('LightlineLeft_normal_2'), 'E411: highlight group not found\|cleared')
+  call s:assert.match(s:hi('LightlineLeft_normal_2'), 'E411: [hH]ighlight group not found\|cleared')
   call s:assert.match(s:hi('LightlineRight_normal_0'), s:pattern(palette.normal.right[0]))
   call s:assert.match(s:hi('LightlineRight_normal_1'), s:pattern(palette.normal.right[1]))
   call s:assert.match(s:hi('LightlineRight_normal_2'), s:pattern(palette.normal.right[2]))
-  call s:assert.match(s:hi('LightlineRight_normal_3'), 'E411: highlight group not found\|cleared')
+  call s:assert.match(s:hi('LightlineRight_normal_3'), 'E411: [hH]ighlight group not found\|cleared')
   call s:assert.match(s:hi('LightlineMiddle_normal'), s:pattern(palette.normal.middle[0]))
 endfunction
 
@@ -41,11 +41,11 @@ function! s:suite.insert()
   let palette = lightline#palette()
   call s:assert.match(s:hi('LightlineLeft_insert_0'), s:pattern(palette.insert.left[0]))
   call s:assert.match(s:hi('LightlineLeft_insert_1'), s:pattern(palette.insert.left[1]))
-  call s:assert.match(s:hi('LightlineLeft_insert_2'), 'E411: highlight group not found\|cleared')
+  call s:assert.match(s:hi('LightlineLeft_insert_2'), 'E411: [hH]ighlight group not found\|cleared')
   call s:assert.match(s:hi('LightlineRight_insert_0'), s:pattern(palette.insert.right[0]))
   call s:assert.match(s:hi('LightlineRight_insert_1'), s:pattern(palette.insert.right[1]))
   call s:assert.match(s:hi('LightlineRight_insert_2'), s:pattern(palette.insert.right[2]))
-  call s:assert.match(s:hi('LightlineRight_insert_3'), 'E411: highlight group not found\|cleared')
+  call s:assert.match(s:hi('LightlineRight_insert_3'), 'E411: [hH]ighlight group not found\|cleared')
   call s:assert.match(s:hi('LightlineMiddle_insert'), s:pattern(palette.insert.middle[0]))
 endfunction
 
@@ -58,11 +58,11 @@ function! s:suite.visual()
   let palette = lightline#palette()
   call s:assert.match(s:hi('LightlineLeft_visual_0'), s:pattern(palette.visual.left[0]))
   call s:assert.match(s:hi('LightlineLeft_visual_1'), s:pattern(palette.visual.left[1]))
-  call s:assert.match(s:hi('LightlineLeft_visual_2'), 'E411: highlight group not found\|cleared')
+  call s:assert.match(s:hi('LightlineLeft_visual_2'), 'E411: [hH]ighlight group not found\|cleared')
   call s:assert.match(s:hi('LightlineRight_visual_0'), s:pattern(palette.normal.right[0]))
   call s:assert.match(s:hi('LightlineRight_visual_1'), s:pattern(palette.normal.right[1]))
   call s:assert.match(s:hi('LightlineRight_visual_2'), s:pattern(palette.normal.right[2]))
-  call s:assert.match(s:hi('LightlineRight_visual_3'), 'E411: highlight group not found\|cleared')
+  call s:assert.match(s:hi('LightlineRight_visual_3'), 'E411: [hH]ighlight group not found\|cleared')
   call s:assert.match(s:hi('LightlineMiddle_normal'), s:pattern(palette.normal.middle[0]))
 endfunction
 
@@ -74,11 +74,11 @@ function! s:suite.replace()
   let palette = lightline#palette()
   call s:assert.match(s:hi('LightlineLeft_replace_0'), s:pattern(palette.replace.left[0]))
   call s:assert.match(s:hi('LightlineLeft_replace_1'), s:pattern(palette.replace.left[1]))
-  call s:assert.match(s:hi('LightlineLeft_replace_2'), 'E411: highlight group not found\|cleared')
+  call s:assert.match(s:hi('LightlineLeft_replace_2'), 'E411: [hH]ighlight group not found\|cleared')
   call s:assert.match(s:hi('LightlineRight_replace_0'), s:pattern(palette.replace.right[0]))
   call s:assert.match(s:hi('LightlineRight_replace_1'), s:pattern(palette.replace.right[1]))
   call s:assert.match(s:hi('LightlineRight_replace_2'), s:pattern(palette.replace.right[2]))
-  call s:assert.match(s:hi('LightlineRight_replace_3'), 'E411: highlight group not found\|cleared')
+  call s:assert.match(s:hi('LightlineRight_replace_3'), 'E411: [hH]ighlight group not found\|cleared')
   call s:assert.match(s:hi('LightlineMiddle_replace'), s:pattern(palette.replace.middle[0]))
 endfunction
 
@@ -96,13 +96,13 @@ function! s:suite.left_right()
   call s:assert.match(s:hi('LightlineLeft_normal_1'), s:pattern(palette.normal.left[1]))
   call s:assert.match(s:hi('LightlineLeft_normal_2'), s:pattern(palette.normal.middle[0]))
   call s:assert.match(s:hi('LightlineLeft_normal_3'), s:pattern(palette.normal.middle[0]))
-  call s:assert.match(s:hi('LightlineLeft_normal_4'), 'E411: highlight group not found\|cleared')
+  call s:assert.match(s:hi('LightlineLeft_normal_4'), 'E411: [hH]ighlight group not found\|cleared')
   call s:assert.match(s:hi('LightlineRight_normal_0'), s:pattern(palette.normal.right[0]))
   call s:assert.match(s:hi('LightlineRight_normal_1'), s:pattern(palette.normal.right[1]))
   call s:assert.match(s:hi('LightlineRight_normal_2'), s:pattern(palette.normal.right[2]))
   call s:assert.match(s:hi('LightlineRight_normal_3'), s:pattern(palette.normal.middle[0]))
   call s:assert.match(s:hi('LightlineRight_normal_4'), s:pattern(palette.normal.middle[0]))
-  call s:assert.match(s:hi('LightlineRight_normal_5'), 'E411: highlight group not found\|cleared')
+  call s:assert.match(s:hi('LightlineRight_normal_5'), 'E411: [hH]ighlight group not found\|cleared')
   call s:assert.match(s:hi('LightlineMiddle_normal'), s:pattern(palette.normal.middle[0]))
 endfunction
 
@@ -121,9 +121,9 @@ function! s:suite.no_components()
   call lightline#colorscheme()
   let palette = lightline#palette()
   call s:assert.match(s:hi('LightlineLeft_normal_0'), s:pattern(palette.normal.left[0]))
-  call s:assert.match(s:hi('LightlineLeft_normal_1'), 'E411: highlight group not found\|cleared')
+  call s:assert.match(s:hi('LightlineLeft_normal_1'), 'E411: [hH]ighlight group not found\|cleared')
   call s:assert.match(s:hi('LightlineRight_normal_0'), s:pattern(palette.normal.right[0]))
-  call s:assert.match(s:hi('LightlineRight_normal_1'), 'E411: highlight group not found\|cleared')
+  call s:assert.match(s:hi('LightlineRight_normal_1'), 'E411: [hH]ighlight group not found\|cleared')
   call s:assert.match(s:hi('LightlineMiddle_normal'), s:pattern(palette.normal.middle[0]))
 endfunction
 
@@ -142,7 +142,7 @@ function! s:suite.subseparator()
       if i + 1 == j
         call s:assert.match(s:hi(printf('LightlineLeft_normal_%s_%s', i, j)), s:pattern(get(palette.normal.left, i, palette.normal.middle[0]), get(palette.normal.left, j, palette.normal.middle[0])))
       else
-        call s:assert.match(s:hi(printf('LightlineLeft_normal_%s_%s', i, j)), 'E411: highlight group not found\|cleared')
+        call s:assert.match(s:hi(printf('LightlineLeft_normal_%s_%s', i, j)), 'E411: [hH]ighlight group not found\|cleared')
       endif
     endfor
   endfor
@@ -157,11 +157,11 @@ function! s:suite.component_type()
     call s:assert.match(s:hi(printf('LightlineLeft_normal_%s', type)), s:pattern(palette.normal[type][0]))
     call s:assert.match(s:hi(printf('LightlineLeft_normal_0_%s', type)), s:pattern(palette.normal.left[0], palette.normal[type][0]))
     call s:assert.match(s:hi(printf('LightlineLeft_normal_1_%s', type)), s:pattern(palette.normal.left[1], palette.normal[type][0]))
-    call s:assert.match(s:hi(printf('LightlineLeft_normal_2_%s', type)), 'E411: highlight group not found\|cleared')
+    call s:assert.match(s:hi(printf('LightlineLeft_normal_2_%s', type)), 'E411: [hH]ighlight group not found\|cleared')
     call s:assert.match(s:hi(printf('LightlineLeft_normal_%s_0', type)), s:pattern(palette.normal[type][0], palette.normal.left[0]))
     call s:assert.match(s:hi(printf('LightlineLeft_normal_%s_1', type)), s:pattern(palette.normal[type][0], palette.normal.left[1]))
     call s:assert.match(s:hi(printf('LightlineLeft_normal_%s_2', type)), s:pattern(palette.normal[type][0], palette.normal.middle[0]))
-    call s:assert.match(s:hi(printf('LightlineLeft_normal_%s_3', type)), 'E411: highlight group not found\|cleared')
+    call s:assert.match(s:hi(printf('LightlineLeft_normal_%s_3', type)), 'E411: [hH]ighlight group not found\|cleared')
   endfor
   for type1 in ['error', 'warning']
     for type2 in ['error', 'warning']
diff --git a/test/link.vim b/test/link.vim
index 3da8ea1..3235f54 100644
--- a/test/link.vim
+++ b/test/link.vim
@@ -31,11 +31,11 @@ function! s:suite.link()
   call lightline#link()
   call s:assert.match(s:hi('LightlineLeft_active_0'), 'LightlineLeft_normal_0')
   call s:assert.match(s:hi('LightlineLeft_active_1'), 'LightlineLeft_normal_1')
-  call s:assert.match(s:hi('LightlineLeft_active_2'), 'E411: highlight group not found\|cleared')
+  call s:assert.match(s:hi('LightlineLeft_active_2'), 'E411: [hH]ighlight group not found\|cleared')
   call s:assert.match(s:hi('LightlineRight_active_0'), 'LightlineRight_normal_0')
   call s:assert.match(s:hi('LightlineRight_active_1'), 'LightlineRight_normal_1')
   call s:assert.match(s:hi('LightlineRight_active_2'), 'LightlineRight_normal_2')
-  call s:assert.match(s:hi('LightlineRight_active_3'), 'E411: highlight group not found\|cleared')
+  call s:assert.match(s:hi('LightlineRight_active_3'), 'E411: [hH]ighlight group not found\|cleared')
   call s:assert.match(s:hi('LightlineMiddle_active'), 'LightlineMiddle_normal')
 endfunction
 
@@ -43,11 +43,11 @@ function! s:suite.insert()
   call lightline#link('i')
   call s:assert.match(s:hi('LightlineLeft_active_0'), 'LightlineLeft_insert_0')
   call s:assert.match(s:hi('LightlineLeft_active_1'), 'LightlineLeft_insert_1')
-  call s:assert.match(s:hi('LightlineLeft_active_2'), 'E411: highlight group not found\|cleared')
+  call s:assert.match(s:hi('LightlineLeft_active_2'), 'E411: [hH]ighlight group not found\|cleared')
   call s:assert.match(s:hi('LightlineRight_active_0'), 'LightlineRight_insert_0')
   call s:assert.match(s:hi('LightlineRight_active_1'), 'LightlineRight_insert_1')
   call s:assert.match(s:hi('LightlineRight_active_2'), 'LightlineRight_insert_2')
-  call s:assert.match(s:hi('LightlineRight_active_3'), 'E411: highlight group not found\|cleared')
+  call s:assert.match(s:hi('LightlineRight_active_3'), 'E411: [hH]ighlight group not found\|cleared')
   call s:assert.match(s:hi('LightlineMiddle_active'), 'LightlineMiddle_insert')
 endfunction
 
@@ -55,11 +55,11 @@ function! s:suite.visual()
   call lightline#link('v')
   call s:assert.match(s:hi('LightlineLeft_active_0'), 'LightlineLeft_visual_0')
   call s:assert.match(s:hi('LightlineLeft_active_1'), 'LightlineLeft_visual_1')
-  call s:assert.match(s:hi('LightlineLeft_active_2'), 'E411: highlight group not found\|cleared')
+  call s:assert.match(s:hi('LightlineLeft_active_2'), 'E411: [hH]ighlight group not found\|cleared')
   call s:assert.match(s:hi('LightlineRight_active_0'), 'LightlineRight_visual_0')
   call s:assert.match(s:hi('LightlineRight_active_1'), 'LightlineRight_visual_1')
   call s:assert.match(s:hi('LightlineRight_active_2'), 'LightlineRight_visual_2')
-  call s:assert.match(s:hi('LightlineRight_active_3'), 'E411: highlight group not found\|cleared')
+  call s:assert.match(s:hi('LightlineRight_active_3'), 'E411: [hH]ighlight group not found\|cleared')
   call s:assert.match(s:hi('LightlineMiddle_active'), 'LightlineMiddle_visual')
 endfunction
 
@@ -67,11 +67,11 @@ function! s:suite.replace()
   call lightline#link('R')
   call s:assert.match(s:hi('LightlineLeft_active_0'), 'LightlineLeft_replace_0')
   call s:assert.match(s:hi('LightlineLeft_active_1'), 'LightlineLeft_replace_1')
-  call s:assert.match(s:hi('LightlineLeft_active_2'), 'E411: highlight group not found\|cleared')
+  call s:assert.match(s:hi('LightlineLeft_active_2'), 'E411: [hH]ighlight group not found\|cleared')
   call s:assert.match(s:hi('LightlineRight_active_0'), 'LightlineRight_replace_0')
   call s:assert.match(s:hi('LightlineRight_active_1'), 'LightlineRight_replace_1')
   call s:assert.match(s:hi('LightlineRight_active_2'), 'LightlineRight_replace_2')
-  call s:assert.match(s:hi('LightlineRight_active_3'), 'E411: highlight group not found\|cleared')
+  call s:assert.match(s:hi('LightlineRight_active_3'), 'E411: [hH]ighlight group not found\|cleared')
   call s:assert.match(s:hi('LightlineMiddle_active'), 'LightlineMiddle_replace')
 endfunction
 
@@ -89,13 +89,13 @@ function! s:suite.left_right()
   call s:assert.match(s:hi('LightlineLeft_active_1'), 'LightlineLeft_normal_1')
   call s:assert.match(s:hi('LightlineLeft_active_2'), 'LightlineLeft_normal_2')
   call s:assert.match(s:hi('LightlineLeft_active_3'), 'LightlineLeft_normal_3')
-  call s:assert.match(s:hi('LightlineLeft_active_4'), 'E411: highlight group not found')
+  call s:assert.match(s:hi('LightlineLeft_active_4'), 'E411: [hH]ighlight group not found\|cleared')
   call s:assert.match(s:hi('LightlineRight_active_0'), 'LightlineRight_normal_0')
   call s:assert.match(s:hi('LightlineRight_active_1'), 'LightlineRight_normal_1')
   call s:assert.match(s:hi('LightlineRight_active_2'), 'LightlineRight_normal_2')
   call s:assert.match(s:hi('LightlineRight_active_3'), 'LightlineRight_normal_3')
   call s:assert.match(s:hi('LightlineRight_active_4'), 'LightlineRight_normal_4')
-  call s:assert.match(s:hi('LightlineRight_active_5'), 'E411: highlight group not found')
+  call s:assert.match(s:hi('LightlineRight_active_5'), 'E411: [hH]ighlight group not found\|cleared')
   call s:assert.match(s:hi('LightlineMiddle_active'), 'LightlineMiddle_normal')
 endfunction
 
@@ -114,7 +114,7 @@ function! s:suite.subseparator()
       if i + 1 == j
         call s:assert.match(s:hi(printf('LightlineLeft_active_%s_%s', i, j)), printf('LightlineLeft_normal_%s_%s', i, j))
       else
-        call s:assert.match(s:hi(printf('LightlineLeft_active_%s_%s', i, j)), 'E411: highlight group not found')
+        call s:assert.match(s:hi(printf('LightlineLeft_active_%s_%s', i, j)), 'E411: [hH]ighlight group not found\|cleared')
       endif
     endfor
   endfor
@@ -129,11 +129,11 @@ function! s:suite.component_type()
     call s:assert.match(s:hi(printf('LightlineLeft_active_%s', type)), printf('LightlineLeft_normal_%s', type))
     call s:assert.match(s:hi(printf('LightlineLeft_active_0_%s', type)), printf('LightlineLeft_normal_0_%s', type))
     call s:assert.match(s:hi(printf('LightlineLeft_active_1_%s', type)), printf('LightlineLeft_normal_1_%s', type))
-    call s:assert.match(s:hi(printf('LightlineLeft_active_2_%s', type)), 'E411: highlight group not found')
+    call s:assert.match(s:hi(printf('LightlineLeft_active_2_%s', type)), 'E411: [hH]ighlight group not found\|cleared')
     call s:assert.match(s:hi(printf('LightlineLeft_active_%s_0', type)), printf('LightlineLeft_normal_%s_0', type))
     call s:assert.match(s:hi(printf('LightlineLeft_active_%s_1', type)), printf('LightlineLeft_normal_%s_1', type))
     call s:assert.match(s:hi(printf('LightlineLeft_active_%s_2', type)), printf('LightlineLeft_normal_%s_2', type))
-    call s:assert.match(s:hi(printf('LightlineLeft_active_%s_3', type)), 'E411: highlight group not found')
+    call s:assert.match(s:hi(printf('LightlineLeft_active_%s_3', type)), 'E411: [hH]ighlight group not found\|cleared')
   endfor
   for type1 in ['error', 'warning']
     for type2 in ['error', 'warning']
@@ -148,10 +148,10 @@ function! s:suite.hi_clear()
   call lightline#link()
   call s:assert.match(s:hi('LightlineLeft_active_0'), 'LightlineLeft_normal_0')
   call s:assert.match(s:hi('LightlineLeft_active_1'), 'LightlineLeft_normal_1')
-  call s:assert.match(s:hi('LightlineLeft_active_2'), 'E411: highlight group not found\|cleared')
+  call s:assert.match(s:hi('LightlineLeft_active_2'), 'E411: [hH]ighlight group not found\|cleared')
   call s:assert.match(s:hi('LightlineRight_active_0'), 'LightlineRight_normal_0')
   call s:assert.match(s:hi('LightlineRight_active_1'), 'LightlineRight_normal_1')
   call s:assert.match(s:hi('LightlineRight_active_2'), 'LightlineRight_normal_2')
-  call s:assert.match(s:hi('LightlineRight_active_3'), 'E411: highlight group not found\|cleared')
+  call s:assert.match(s:hi('LightlineRight_active_3'), 'E411: [hH]ighlight group not found\|cleared')
   call s:assert.match(s:hi('LightlineMiddle_active'), 'LightlineMiddle_normal')
 endfunction