diff --git a/website/source/docs/providers/aws/r/db_parameter_group.html.markdown b/website/source/docs/providers/aws/r/db_parameter_group.html.markdown
index 41e2f7b86042..0f7c582d7eeb 100644
--- a/website/source/docs/providers/aws/r/db_parameter_group.html.markdown
+++ b/website/source/docs/providers/aws/r/db_parameter_group.html.markdown
@@ -37,6 +37,8 @@ The following arguments are supported:
 * `description` - (Required) The description of the DB parameter group.
 * `parameter` - (Optional) A list of DB parameters to apply.
 
+~> **NOTE:** `name` needs to be an alphanumeric, lowercase string and less than 255 characters. The use of uppercase characters in the string may cause terraform to continually show changes to the db_parameter_group.
+
 Parameter blocks support the following:
 
 * `name` - (Required) The name of the DB parameter.