diff --git a/nvim/lua/chadrc.lua b/nvim/lua/chadrc.lua
index 05857e3..73a45fc 100644
--- a/nvim/lua/chadrc.lua
+++ b/nvim/lua/chadrc.lua
@@ -6,7 +6,7 @@ local M = {}
 
 M.ui = {
 	theme = "palenight",
-  theme_toggle = {"doomchad", "palenight",},
+  theme_toggle = {"palenight", "palenight",},
 
   statusline = {
     theme = "default"
diff --git a/nvim/lua/configs/lspconfig.lua b/nvim/lua/configs/lspconfig.lua
index 8c6efcb..992b0ee 100644
--- a/nvim/lua/configs/lspconfig.lua
+++ b/nvim/lua/configs/lspconfig.lua
@@ -47,7 +47,13 @@ lspconfig.gopls.setup({
   },
 })
 
-lspconfig.clangd.setup{}
+lspconfig.clangd.setup{
+  on_attach = function (client, bufnr)
+    client.server_capabilities.signatureHelpProvider = false
+    on_attach(client, bufnr)
+  end,
+  capabilities = capabilities
+}
 
 -- typescript
 -- lspconfig.tsserver.setup {
diff --git a/nvim/lua/mappings.lua b/nvim/lua/mappings.lua
index 783b78f..cfed478 100644
--- a/nvim/lua/mappings.lua
+++ b/nvim/lua/mappings.lua
@@ -8,3 +8,5 @@ map("n", ";", ":", { desc = "CMD enter command mode" })
 map("i", "jk", "<ESC>")
 
 -- map({ "n", "i", "v" }, "<C-s>", "<cmd> w <cr>")
+
+map("n", '<leader>fr', function() vim.lsp.buf.references() end, { desc = "References" })
diff --git a/nvim/lua/plugins/init.lua b/nvim/lua/plugins/init.lua
index 7a8b224..9e109bd 100644
--- a/nvim/lua/plugins/init.lua
+++ b/nvim/lua/plugins/init.lua
@@ -48,20 +48,18 @@ return {
   		ensure_installed = {
   			"lua-language-server",
         "clangd",
+        "clang-format",
         "stylua",
         "gopls",
         "golangci-lint",
   		},
   	},
   },
-  --
-  -- {
-  -- 	"nvim-treesitter/nvim-treesitter",
-  -- 	opts = {
-  -- 		ensure_installed = {
-  -- 			"vim", "lua", "vimdoc",
-  --      "html", "css"
-  -- 		},
-  -- 	},
-  -- },
+  {
+    "jose-elias-alvarez/null-ls.nvim",
+    event = "VeryLazy",
+    opts = function ()
+      return require "configs.null-ls"
+    end
+  }
 }