diff --git a/x-pack/metricbeat/module/aws/cloudwatch/metadata.go b/x-pack/metricbeat/module/aws/cloudwatch/metadata.go
index 75b3696295b..335f38e5b49 100644
--- a/x-pack/metricbeat/module/aws/cloudwatch/metadata.go
+++ b/x-pack/metricbeat/module/aws/cloudwatch/metadata.go
@@ -16,7 +16,7 @@ const (
 	namespaceEC2 = "AWS/EC2"
 )
 
-// addMetadata returns a service to fetch metadata from a config struct.
+// addMetadata adds metadata to the given events map based on namespace
 func addMetadata(namespace string, endpoint string, regionName string, awsConfig awssdk.Config, events map[string]mb.Event) map[string]mb.Event {
 	switch namespace {
 	case namespaceEC2: