diff --git a/cw_namespaces/NATGateway.yml b/cw_namespaces/NATGateway.yml
index 3a2e80f..66d231a 100644
--- a/cw_namespaces/NATGateway.yml
+++ b/cw_namespaces/NATGateway.yml
@@ -3,7 +3,7 @@
   aws_metric_name: ActiveConnectionCount
   aws_namespace: AWS/NATGateway
   aws_statistics:
-  - Max
+  - Maximum
 - aws_dimensions:
   - NatGatewayId
   aws_metric_name: BytesInFromDestination