diff --git a/autoload/SpaceVim/api/vim/highlight.vim b/autoload/SpaceVim/api/vim/highlight.vim
index 3cbca1b90..124d92e73 100644
--- a/autoload/SpaceVim/api/vim/highlight.vim
+++ b/autoload/SpaceVim/api/vim/highlight.vim
@@ -21,8 +21,8 @@ let s:self = {}
 " reverse: if reverse
 
 function! s:self.group2dict(name) abort
-    let id = index(map(range(1999), "synIDattr(v:val, 'name')"), a:name)
-    if id == -1
+    let id = hlID(a:name)
+    if id == 0
         return {
                     \ 'name' : '',
                     \ 'ctermbg' : '',
diff --git a/test/api/vim/highlight.vader b/test/api/vim/highlight.vader
index 321a6b632..245004452 100644
--- a/test/api/vim/highlight.vader
+++ b/test/api/vim/highlight.vader
@@ -2,6 +2,19 @@ Execute ( SpaceVim api: vim#highlight ):
   let hi = SpaceVim#api#import('vim#highlight')
   set termguicolors
   highlight TestAPIVimHighlight ctermfg=11 guifg=#89DDFF guibg=#212121
-  AssertEqual hi.group2dict('TestAPIVimHighlight').guibg, '#212121'
-  AssertEqual hi.group2dict('TestAPIVimHighlight').guifg, '#89ddff'
-  AssertEqual hi.group2dict('TestAPIVimHighlight').ctermfg, '11'
+
+  let test_api_hi = hi.group2dict('TestAPIVimHighlight')
+  AssertEqual test_api_hi.guibg, '#212121'
+  AssertEqual test_api_hi.guifg, '#89ddff'
+  AssertEqual test_api_hi.ctermfg, '11'
+
+  let unknown_hi = hi.group2dict('UnknownHighlightGroup')
+  AssertEqual unknown_hi.name, ''
+  AssertEqual unknown_hi.ctermbg, ''
+  AssertEqual unknown_hi.ctermfg, ''
+  AssertEqual unknown_hi.bold, ''
+  AssertEqual unknown_hi.italic, ''
+  AssertEqual unknown_hi.reverse, ''
+  AssertEqual unknown_hi.underline, ''
+  AssertEqual unknown_hi.guibg, ''
+  AssertEqual unknown_hi.guifg, ''