diff --git a/lua/plugins/peek.lua b/lua/plugins/peek.lua
index fe7e85f..fb258ca 100644
--- a/lua/plugins/peek.lua
+++ b/lua/plugins/peek.lua
@@ -3,8 +3,13 @@ return {
     event = { "VeryLazy" },
     build = "deno task --quiet build:fast",
     config = function()
-        require("peek").setup()
+        require("peek").setup({
+            app = "firefox",
+        })
         vim.api.nvim_create_user_command("PeekOpen", require("peek").open, {})
         vim.api.nvim_create_user_command("PeekClose", require("peek").close, {})
     end,
+    keys = {
+        { "<leader>md", "<cmd>PeekOpen<CR>", desc = "Open peek markdown" },
+    },
 }