diff --git a/autoload/tablemode.vim b/autoload/tablemode.vim
index 8abde89..ab1cc72 100644
--- a/autoload/tablemode.vim
+++ b/autoload/tablemode.vim
@@ -113,9 +113,6 @@ function! s:StartExpr() "{{{2
   endif
 endfunction
 
-function! s:HeaderBorderExpr() "{{{2
-  return '^\s*' . g:table_mode_corner . '[' . g:table_mode_fillchar . g:table_mode_corner . ']*' . g:table_mode_corner . '$'
-endfunction
 
 function! s:EndExpr() "{{{2
   let cend = s:GetCommentEnd()
@@ -126,6 +123,10 @@ function! s:EndExpr() "{{{2
   endif
 endfunction
 
+function! s:HeaderBorderExpr() "{{{2
+  return s:StartExpr() . g:table_mode_corner . '[' . g:table_mode_fillchar . g:table_mode_corner . ']*' . g:table_mode_corner . s:EndExpr()
+endfunction
+
 function! s:StartCommentExpr() "{{{2
   let cstartexpr = s:GetCommentStart()
   if s:Strlen(cstartexpr) > 0