diff --git a/timmy/conf.py b/timmy/conf.py
index 8f35012..5dc080c 100644
--- a/timmy/conf.py
+++ b/timmy/conf.py
@@ -28,7 +28,8 @@ def load_conf(filename):
     conf['ssh_opts'] = ['-oConnectTimeout=2', '-oStrictHostKeyChecking=no',
                         '-oUserKnownHostsFile=/dev/null', '-oLogLevel=error',
                         '-lroot', '-oBatchMode=yes']
-    conf['env_vars'] = ['OPENRC=/root/openrc', 'IPTABLES_STR="iptables -nvL"']
+    conf['env_vars'] = ['OPENRC=/root/openrc', 'IPTABLES_STR="iptables -nvL"',
+                        'LC_ALL="C"', 'LANG="C"']
     conf['fuel_ip'] = '127.0.0.1'
     conf['fuel_user'] = 'admin'
     conf['fuel_port'] = '8000'
diff --git a/timmy/env.py b/timmy/env.py
index 7b502c5..23bf02b 100644
--- a/timmy/env.py
+++ b/timmy/env.py
@@ -16,7 +16,7 @@
 #    under the License.
 
 project_name = 'timmy'
-version = '1.15.6'
+version = '1.15.7'
 
 if __name__ == '__main__':
     import sys