diff --git a/lua/cosmic/config/config.lua b/lua/cosmic/config/config.lua
index 129465a..d6c28b9 100644
--- a/lua/cosmic/config/config.lua
+++ b/lua/cosmic/config/config.lua
@@ -13,6 +13,20 @@ config.lsp = {
   -- true/false or table of filetypes {'.ts', '.js',}
   format_on_save = true,
 
+  diagnostic = {
+    -- disable diagnostic virtual text (see :h vim.diagnostic.config for all options)
+    virtual_text = false,
+
+    -- disable diagnostic signs (see :h vim.diagnostic.config for all options)
+    signs = false,
+
+    -- enable diagnostic update on insert
+    update_in_insert = true,
+
+    -- disable underline for diagnostic
+    underline = false,
+  }
+
   servers = {
 
     -- enable/disable server + formatting
diff --git a/lua/cosmic/config/init.lua b/lua/cosmic/config/init.lua
index d89010a..cc56a3e 100644
--- a/lua/cosmic/config/init.lua
+++ b/lua/cosmic/config/init.lua
@@ -17,6 +17,24 @@ local default_config = {
   },
   lsp = {
     format_on_save = true, -- true/false or table of filetypes {'.ts', '.js',}
+    diagnostic = {
+      signs = true,
+      update_in_insert = false,
+      virtual_text = {
+        spacing = 4,
+        source = 'always',
+        severity = {
+          min = vim.diagnostic.severity.HINT,
+        },
+        -- todo: icons for diagnostics?
+        --[[ format = function(diagnostic)
+        if diagnostic.severity == vim.diagnostic.severity.ERROR then
+          return string.format('E: %s', diagnostic.message)
+        end
+        return diagnostic.message
+      end, ]]
+      },
+    },
     servers = {
       eslint = {
         format = false,
diff --git a/lua/cosmic/lsp/diagnostics.lua b/lua/cosmic/lsp/diagnostics.lua
index b5ecc3b..8253db7 100644
--- a/lua/cosmic/lsp/diagnostics.lua
+++ b/lua/cosmic/lsp/diagnostics.lua
@@ -1,25 +1,13 @@
+local config = require('cosmic.config')
 local icons = require('cosmic.core.theme.icons')
 local M = {}
 
 function M.init()
   vim.diagnostic.config({
     underline = true,
-    update_in_insert = false,
-    virtual_text = {
-      spacing = 4,
-      source = 'always',
-      severity = {
-        min = vim.diagnostic.severity.HINT,
-      },
-      -- todo: icons for diagnostics?
-      --[[ format = function(diagnostic)
-        if diagnostic.severity == vim.diagnostic.severity.ERROR then
-          return string.format('E: %s', diagnostic.message)
-        end
-        return diagnostic.message
-      end, ]]
-    },
-    signs = true,
+    update_in_insert = config.lsp.diagnostic.update_in_insert,
+    virtual_text = config.lsp.diagnostic.virtual_text,
+    signs = config.lsp.diagnostic.signs,
     severity_sort = true,
     float = {
       show_header = false,