diff --git a/cloud/ec2_facts b/cloud/ec2_facts
index 3fade4d1a05..f6d8d557721 100644
--- a/cloud/ec2_facts
+++ b/cloud/ec2_facts
@@ -127,6 +127,7 @@ class Ec2Metadata(object):
         for (key, value) in data.items():
             if ':' in key or '-' in key:
                 newkey = key.replace(':','_').replace('-','_')
+                del data[key]
                 data[newkey] = value
 
     def add_ec2_region(self, data):