diff --git a/code/ddns-lambda.py b/code/ddns-lambda.py
index d14f356..66921d1 100755
--- a/code/ddns-lambda.py
+++ b/code/ddns-lambda.py
@@ -3299,10 +3299,10 @@ def discover_emr_cluster(tags):
     This tags a dict of tags and determines if the appropriate EMR tags are set.
 
     If set, this is a member of an EMR cluster with the cluster_id as the value:
-    -  emr:elasticmapreduce:job-flow-id = j-xxxxxxx
+    -  aws:elasticmapreduce:job-flow-id = j-xxxxxxx
 
     If set, this is a master node of the cluster:
-    -  emr:elasticmapreduce:instance-group-role == MASTER
+    -  aws:elasticmapreduce:instance-group-role == MASTER
 
     :param dict tags: dict of tag
     :return (bool,str): Tuple containing is_master, is_cluster, and cluster_id if it's a cluster.  cluster_id will be empty if not a cluster.