diff --git a/lua/Navigator/utils.lua b/lua/Navigator/utils.lua
index 84fddeb..ffa0a16 100644
--- a/lua/Navigator/utils.lua
+++ b/lua/Navigator/utils.lua
@@ -4,20 +4,24 @@ local U = {}
 ---@param cmd string
 ---@return unknown
 function U.execute(cmd)
-    local handle = assert(io.popen(cmd), string.format('[Navigator] Unable to execute cmd - %q', cmd))
+    local handle = assert(io.popen(cmd .. '>/dev/null 2>&1'), string.format('[Navigator] Unable to execute cmd - %q', cmd))
     local result = handle:read()
     handle:close()
     return result
 end
 
+local suffix_cache = nil
 ---Returns executable suffix based on platform
 ---@return string
-function U.suffix()
-    local uname = vim.loop.os_uname()
-    if string.find(uname.release, 'WSL.*$') or string.find(uname.sysname, '^Win') then
-        return '.exe'
-    end
-    return ''
+U.suffix = function()
+	if not suffix_cache then
+		suffix_cache = '' -- default to empty, overwrite if it's windows
+		local obj = vim.system({ 'wezterm.exe', '--help' }):wait() -- if exe exists
+		if obj.code == 0 then
+			suffix_cache = '.exe'
+		end
+	end
+	return suffix_cache
 end
 
 return U