diff --git a/contrib/ec2/deis.template b/contrib/ec2/deis.template.json
similarity index 100%
rename from contrib/ec2/deis.template
rename to contrib/ec2/deis.template.json
diff --git a/contrib/ec2/gen-json.py b/contrib/ec2/gen-json.py
index 53543da9e9..f4f7f383b9 100755
--- a/contrib/ec2/gen-json.py
+++ b/contrib/ec2/gen-json.py
@@ -2,7 +2,7 @@
 import json
 import os
 
-template = json.load(open("deis.template",'r'))
+template = json.load(open("deis.template.json",'r'))
 
 with open('../coreos/user-data','r') as f:
   lines = f.readlines()