diff --git a/deploy-cluster-aws/fab_prepare_chain.py b/deploy-cluster-aws/fab_prepare_chain.py
index f67c38e3..caa827ad 100644
--- a/deploy-cluster-aws/fab_prepare_chain.py
+++ b/deploy-cluster-aws/fab_prepare_chain.py
@@ -3,7 +3,7 @@
 """ Generating genesis block
 """
 
-from __future__ import with_statement
+from __future__ import with_statement, unicode_literals
 
 from fabric import colors as c
 from fabric.api import *
diff --git a/deploy-cluster-aws/fabfile.py b/deploy-cluster-aws/fabfile.py
index 7079ad0c..1fc64184 100644
--- a/deploy-cluster-aws/fabfile.py
+++ b/deploy-cluster-aws/fabfile.py
@@ -4,7 +4,7 @@
 bigchaindb, including its storage backend.
 """
 
-from __future__ import with_statement
+from __future__ import with_statement, unicode_literals
 
 import requests
 from time import *
@@ -36,7 +36,7 @@ env.roledefs = {
     }
 env.roles = ["role1"]
 env.user = 'ubuntu'
-env.key_filename = ['pem/bigchaindb.pem', ]
+env.key_filename = 'pem/bigchaindb.pem'
 
 
 ######################################################################