diff --git a/README.md b/README.md
index 241bd61..ee17ed7 100644
--- a/README.md
+++ b/README.md
@@ -115,8 +115,9 @@ vim.g.symbols_outline = {
 | ?          | Show help message                                                  |
 
 ### Highlights
-| Highlight     | Purpose                                                 |
-| ------------- | ------------------------------------------------------- |
-| FocusedSymbol | Highlight of the focused symbol                         |
-| Pmenu         | Highlight of the preview popup windows                  |
-| Comment       | Highlight of the table connectors and info virtual text |
+| Highlight               | Purpose                                |
+| ----------------------- | -------------------------------------- |
+| FocusedSymbol           | Highlight of the focused symbol        |
+| Pmenu                   | Highlight of the preview popup windows |
+| SymbolsOutlineConnector | Highlight of the table connectors      |
+| Comment                 | Highlight of the info virtual text     |
diff --git a/doc/symbols-outline.txt b/doc/symbols-outline.txt
index e1460e3..54afb85 100644
--- a/doc/symbols-outline.txt
+++ b/doc/symbols-outline.txt
@@ -218,8 +218,8 @@ symbol_blacklist
 ================================================================================
 5. COMMANDS                                           *symbols-outline-commands*
 
-| Command              | Description            |
-| -------------------- | ---------------------- |
+| Command                | Description            |
+| ---------------------- | ---------------------- |
 | `:SymbolsOutline`      | Toggle symbols outline |
 | `:SymbolsOutlineOpen`  | Open symbols outline   |
 | `:SymbolsOutlineClose` | Close symbols outline  |
@@ -241,11 +241,12 @@ symbol_blacklist
 ================================================================================
 7. HIGHLIGHTS                                       *symbols-outline-highlights*
 
-| Highlight     | Purpose                                                 |
-| ------------- | ------------------------------------------------------- |
-| FocusedSymbol | Highlight of the focused symbol                         |
-| Pmenu         | Highlight of the preview popup windows                  |
-| Comment       | Highlight of the table connectors and info virtual text |
+| Highlight               | Purpose                                                 |
+| ----------------------- | ------------------------------------------------------- |
+| FocusedSymbol           | Highlight of the focused symbol                         |
+| Pmenu                   | Highlight of the preview popup windows                  |
+| SymbolsOutlineConnector | Highlight of the table connectors                       |
+| Comment                 | Highlight of the table connectors and info virtual text |
 
 ================================================================================
 vim:tw=79:ts=8:ft=help:norl
diff --git a/lua/symbols-outline/ui.lua b/lua/symbols-outline/ui.lua
index 6082b95..a1e2e42 100644
--- a/lua/symbols-outline/ui.lua
+++ b/lua/symbols-outline/ui.lua
@@ -37,14 +37,15 @@ function M.setup_highlights()
     -- notably making them italic, which messes up the outline connector. Fix
     -- this by copying the foreground color from the comment hl into a new
     -- highlight.
-    local comment_fg_gui = vim.fn.synIDattr(vim.fn.hlID('Comment'), 'fg',
-                                            'gui')
-    local comment_fg_cterm = vim.fn.synIDattr(vim.fn.hlID('Comment'), 'fg',
+    local comment_fg_gui = vim.fn.synIDattr(vim.fn.synIDtrans(vim.fn.hlID('Comment')), 'fg', 'gui')
+    local comment_fg_cterm = vim.fn.synIDattr(vim.fn.synIDtrans(vim.fn.hlID('Comment')), 'fg',
                                               'cterm')
+                                              print(comment_fg_gui)
 
-
-    vim.cmd(string.format('hi SymbolsOutlineConnector ctermfg=%s guifg=%s',
-                          comment_fg_cterm, comment_fg_gui))
+    if vim.fn.hlexists('SymbolsOutlineConnector') == 0 then
+        vim.cmd(string.format('hi SymbolsOutlineConnector ctermfg=%s guifg=%s',
+                              comment_fg_cterm, comment_fg_gui))
+    end
 
     local symbols = config.options.symbols