diff --git a/persepolis/Persepolis Download Manager.py b/persepolis/Persepolis Download Manager.py
index 70aad176..5295b864 100755
--- a/persepolis/Persepolis Download Manager.py	
+++ b/persepolis/Persepolis Download Manager.py	
@@ -1,4 +1,3 @@
-#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
 
diff --git a/persepolis/__main__.py b/persepolis/__main__.py
index 3ab89a77..7706e257 100644
--- a/persepolis/__main__.py
+++ b/persepolis/__main__.py
@@ -1,4 +1,3 @@
-#!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 
 
diff --git a/setup.py b/setup.py
index 71b3ddf4..c895c3c8 100755
--- a/setup.py
+++ b/setup.py
@@ -42,7 +42,6 @@
     print('python3-pyqt5 is found')
 except:
     print('Error : python3-pyqt5 is not installed!')
-    sys.exit(1)
 
 # python3-requests
 try:
@@ -50,7 +49,6 @@
     print('python3-requests is found!')
 except:
     print('Error : requests is not installed!')
-    sys.exit(1)
 
 # python3-setproctitle
 try:
@@ -66,11 +64,17 @@
 except:
     print("Warning: python3-psutil is not installed!")
 
+# youtube_dl
+try:
+    import youtube_dl
+    print('youtube_dl is found')
+except:
+    print('Warning: youtube_dl is not installed!')
+
 # aria2
 answer = os.system('aria2c --version 1>/dev/null')
 if answer != 0:
     print("Error aria2 not installed!")
-    sys.exit(1)
 else:
     print('aria2 is found!')
 
@@ -78,7 +82,6 @@
 answer = os.system('notify-send --version 1>/dev/null')
 if answer != 0:
     print("Error libnotify-bin is not installed!")
-    sys.exit(1)
 else:
     print('libnotify-bin is found!')
 
@@ -101,7 +104,9 @@
     print('Warning: sound-theme-freedesktop is not installed! you need this package for sound notifications!')
  
 
-
+if sys.argv[1] == "test":
+   print('We have not unit test :)')
+   sys.exit('0')
 
 DESCRIPTION = 'Persepolis Download Manager'
 
@@ -151,7 +156,7 @@
     license = 'GPL3',
     description = DESCRIPTION,
     long_description = DESCRIPTION,
-    include_package_data=True,
+    include_package_data = True,
     url = 'https://github.com/persepolisdm/persepolis',
     author = 'AliReza AmirSamimi',
     author_email = 'alireza.amirsamimi@gmail.com',