diff --git a/src/yunohost/tools.py b/src/yunohost/tools.py
index 5571f7c0..bcca5b0e 100644
--- a/src/yunohost/tools.py
+++ b/src/yunohost/tools.py
@@ -104,7 +104,7 @@ def tools_ldapinit():
     auth.update('cn=admin', admin_dict)
 
     # Force nscd to refresh cache to take admin creation into account
-    subprocess.call(['nscd', '-i', 'passwd'])
+    subprocess.call(['nscd', '-i', 'passwd'], stderr=open(os.devnull, 'wb'))
 
     # Check admin actually exists now
     try:
@@ -203,7 +203,7 @@ def _set_hostname(hostname, pretty_hostname=None):
         pretty_hostname = "(YunoHost/%s)" % hostname
 
     # First clear nsswitch cache for hosts to make sure hostname is resolved...
-    subprocess.call(['nscd', '-i', 'hosts'])
+    subprocess.call(['nscd', '-i', 'hosts'], stderr=open(os.devnull, 'wb'))
 
     # Then call hostnamectl
     commands = [