diff --git a/src/yunohost/app.py b/src/yunohost/app.py
index 019bac899..a30690018 100644
--- a/src/yunohost/app.py
+++ b/src/yunohost/app.py
@@ -24,10 +24,8 @@
     Manage apps
 """
 import os
-import sys
 import json
 import shutil
-import stat
 import yaml
 import time
 import re
diff --git a/src/yunohost/backup.py b/src/yunohost/backup.py
index dd7c73852..f2a48735c 100644
--- a/src/yunohost/backup.py
+++ b/src/yunohost/backup.py
@@ -25,7 +25,6 @@
 """
 import os
 import re
-import sys
 import json
 import errno
 import time
diff --git a/src/yunohost/hook.py b/src/yunohost/hook.py
index 2d46cfcd5..db7cd9504 100644
--- a/src/yunohost/hook.py
+++ b/src/yunohost/hook.py
@@ -24,11 +24,8 @@
     Manage hooks
 """
 import os
-import sys
 import re
-import json
 import errno
-import subprocess
 from glob import iglob
 
 from moulinette.core import MoulinetteError
diff --git a/src/yunohost/monitor.py b/src/yunohost/monitor.py
index d0fe224e9..315fb3a08 100644
--- a/src/yunohost/monitor.py
+++ b/src/yunohost/monitor.py
@@ -35,7 +35,7 @@ import errno
 import os
 import dns.resolver
 import cPickle as pickle
-from datetime import datetime, timedelta
+from datetime import datetime
 
 from moulinette.core import MoulinetteError
 from moulinette.utils.log import getActionLogger
diff --git a/src/yunohost/service.py b/src/yunohost/service.py
index ab26dd2bc..b1b776326 100644
--- a/src/yunohost/service.py
+++ b/src/yunohost/service.py
@@ -36,7 +36,7 @@ from difflib import unified_diff
 from moulinette.core import MoulinetteError
 from moulinette.utils import log, filesystem
 
-from yunohost.hook import hook_list, hook_callback
+from yunohost.hook import hook_callback
 
 
 base_conf_path = '/home/yunohost.conf'
diff --git a/src/yunohost/user.py b/src/yunohost/user.py
index ec7dd539c..f5ac25ea8 100644
--- a/src/yunohost/user.py
+++ b/src/yunohost/user.py
@@ -30,7 +30,6 @@ import string
 import json
 import errno
 import subprocess
-import math
 import re
 
 from moulinette.core import MoulinetteError