diff --git a/lua/pika/core/keymaps.lua b/lua/pika/core/keymaps.lua
index 0a54da3..e24df43 100644
--- a/lua/pika/core/keymaps.lua
+++ b/lua/pika/core/keymaps.lua
@@ -62,20 +62,24 @@ map("n", "<leader>R", [[:%s/\<<C-r><C-w>\>/<C-r><C-w>/gI<Left><Left><Left>]])
 map("n", "<leader>sv", "<C-w>v", { desc = "Split window vertically" }) -- split window vertically
 map("n", "<leader>sh", "<C-w>s", { desc = "Split window horizontally" }) -- split window horizontally
 
-vim.keymap.set({ "n", "v" }, "<leader>tt", function()
+vim.keymap.set({ "n", "i" }, "<leader>tt", function()
 	-- Frage den Shell-Command ab
 	vim.ui.input({ prompt = "Shell Command: " }, function(cmd)
 		if cmd == nil or cmd == "" then
 			return
 		end
 
-		local handle = io.popen(cmd)
-		local result = handle:read("*a")
-		handle:close()
+		local result = vim.fn.system(cmd)
+		local exit_code = vim.v.shell_error
+
+		if exit_code ~= 0 then
+			vim.notify("Shell Error:\n" .. result, vim.log.levels.ERROR, { title = "Shell Command Failed" })
+			return
+		end
 
 		local lines = vim.split(result, "\n", { trimempty = true })
 
-		-- Einfügen an Cursor-Position
+		-- Insert at cursor position
 		local row, col = unpack(vim.api.nvim_win_get_cursor(0))
 		vim.api.nvim_buf_set_lines(0, row, row, false, lines)
 	end)