diff --git a/lua/symbols-outline.lua b/lua/symbols-outline.lua
index 7ec9fa2..a443fec 100644
--- a/lua/symbols-outline.lua
+++ b/lua/symbols-outline.lua
@@ -4,6 +4,7 @@ local parser = require('symbols-outline.parser')
 local ui = require('symbols-outline.ui')
 local writer = require('symbols-outline.writer')
 local config = require('symbols-outline.config')
+local utils = require('symbols-outline.utils.lsp_utils')
 
 local M = {}
 
@@ -73,7 +74,7 @@ end
 
 function M._highlight_current_item()
     if M.state.outline_buf == nil or vim.api.nvim_get_current_buf() ==
-        M.state.outline_buf then return end
+        M.state.outline_buf or not utils.is_buf_attached_to_lsp() then return end
 
     local hovered_line = vim.api.nvim_win_get_cursor(
                              vim.api.nvim_get_current_win())[1] - 1
diff --git a/lua/symbols-outline/utils/lsp_utils.lua b/lua/symbols-outline/utils/lsp_utils.lua
new file mode 100644
index 0000000..eb9e9e9
--- /dev/null
+++ b/lua/symbols-outline/utils/lsp_utils.lua
@@ -0,0 +1,10 @@
+local vim = vim
+
+local M = {}
+
+function M.is_buf_attached_to_lsp(bufnr)
+    local clients = vim.lsp.buf_get_clients(bufnr or 0)
+    return clients ~= nil and #clients > 0
+end
+
+return M