diff --git a/index.js b/index.js
index 25e765e..8103ae9 100644
--- a/index.js
+++ b/index.js
@@ -73,8 +73,10 @@ function initTools(callback) {
  */
 function scanNetworks(callback, useSudo) {
   const cmd = scanner.cmdLine.split(" ");
-  const args = cmd.slice(1);
-  const child = spawn((useSudo ? "sudo " : "" ) + cmd[0], args, { stdio: ['ignore', 'pipe', 'pipe'], detached: true });
+  let args = cmd.slice(1);
+  if(useSudo)
+    args.unshift(cmd[0]);
+  const child = spawn(useSudo ? "sudo" : cmd[0], args, { stdio: ['ignore', 'pipe', 'pipe'], detached: true });
 
   child.on("error", (err) => callback(err, null) );