diff --git a/lua/navigator.lua b/lua/navigator.lua
index 03639aa..0197073 100755
--- a/lua/navigator.lua
+++ b/lua/navigator.lua
@@ -229,7 +229,8 @@ M.setup = function(cfg)
   require('navigator.hierarchy')
   require('navigator.implementation')
 
-  require('navigator.diagnostics').config(cfg.diagnostic)
+  cfg.lsp = cfg.lsp or _NgConfigValues.lsp
+  require('navigator.diagnostics').config(cfg.lsp.diagnostic)
   if not _NgConfigValues.loaded then
     _NgConfigValues.loaded = true
   end