diff --git a/README.md b/README.md
index dc93b16..61dc76e 100644
--- a/README.md
+++ b/README.md
@@ -45,11 +45,11 @@
 
 export SHUTDOWN_ENV_ON_TEARDOWN=false  # Optional
 
-py.test -vvv -s -k test_tcp_install_default
+LC_ALL=en_US.UTF-8  py.test -vvv -s -k test_tcp_install_default
 
 , or as an alternative there is another test that use deploy scripts from models repository written on bash [2]:
 
-py.test -vvv -s -k test_tcp_install_with_scripts
+LC_ALL=en_US.UTF-8  py.test -vvv -s -k test_tcp_install_with_scripts