diff --git a/ec2/spark_ec2.py b/ec2/spark_ec2.py
index 4a12bdd2c9a81..6ce531e5054d8 100755
--- a/ec2/spark_ec2.py
+++ b/ec2/spark_ec2.py
@@ -420,9 +420,13 @@ def launch_cluster(conn, opts, cluster_name):
 
     # Give the instances descriptive names
     for master in master_nodes:
-        master.add_tag(key='Name', value='spark-{cn}-master-{iid}'.format(cn=cluster_name, iid=master.id))
+        master.add_tag(
+            key='Name', 
+            value='spark-{cn}-master-{iid}'.format(cn=cluster_name, iid=master.id))
     for slave in slave_nodes:
-        slave.add_tag(key='Name', value='spark-{cn}-slave-{iid}'.format(cn=cluster_name, iid=slave.id))
+        slave.add_tag(
+            key='Name', 
+            value='spark-{cn}-slave-{iid}'.format(cn=cluster_name, iid=slave.id))
 
     # Return all the instances
     return (master_nodes, slave_nodes)