diff --git a/README.md b/README.md
index b0bf542..cd050b5 100644
--- a/README.md
+++ b/README.md
@@ -62,11 +62,15 @@ return {
       },
     }
   },
-  event = 'VeryLazy',
-  opts = {},
 }
 ```
 
+- Setup nvim-java before `lspconfig`
+
+```lua
+require('java').setup()
+```
+
 - Setup jdtls like you would usually do
 
 ```lua
diff --git a/lua/java.lua b/lua/java.lua
index d5f3f09..febde67 100644
--- a/lua/java.lua
+++ b/lua/java.lua
@@ -11,7 +11,8 @@ local global_config = require('java.config')
 local M = {}
 
 function M.setup(custom_config)
-	local config = vim.tbl_deep_extend('force', global_config, custom_config)
+	local config =
+		vim.tbl_deep_extend('force', global_config, custom_config or {})
 
 	nvim_dep.check()