diff --git a/lua/coderabbit/init.lua b/lua/coderabbit/init.lua
index ff8ca58..61249b5 100644
--- a/lua/coderabbit/init.lua
+++ b/lua/coderabbit/init.lua
@@ -6,16 +6,6 @@ function M.setup(opts)
 
   local diagnostics = require("coderabbit.diagnostics")
   diagnostics.setup()
-
-  -- Define highlight groups with sensible defaults
-  local hl_defs = {
-    CodeRabbitCritical = { link = "DiagnosticError" },
-    CodeRabbitMajor = { link = "DiagnosticWarn" },
-    CodeRabbitMinor = { link = "DiagnosticInfo" },
-  }
-  for name, val in pairs(hl_defs) do
-    vim.api.nvim_set_hl(0, name, vim.tbl_extend("keep", val, { default = true }))
-  end
 end
 
 function M.review(opts)