diff --git a/website/source/docs/providers/aws/r/kms_alias.html.markdown b/website/source/docs/providers/aws/r/kms_alias.html.markdown
index 9efe4377c..3320b3db4 100644
--- a/website/source/docs/providers/aws/r/kms_alias.html.markdown
+++ b/website/source/docs/providers/aws/r/kms_alias.html.markdown
@@ -28,7 +28,10 @@ resource "aws_kms_alias" "a" {
 
 The following arguments are supported:
 
-* `name` - (Required) The display name of the alias. The name must start with the word "alias" followed by a forward slash (alias/)
+
+* `name` - (Optional) The display name of the alias. The name must start with the word "alias" followed by a forward slash (alias/)
+* `name_prefix` - (Optional) Creates an unique alias beginning with the specified prefix.  
+The name must start with the word "alias" followed by a forward slash (alias/).  Conflicts with `name`.
 * `target_key_id` - (Required) Identifier for the key for which the alias is for, can be either an ARN or key_id.
 
 ## Attributes Reference