diff --git a/builtin/providers/aws/resource_aws_elb.go b/builtin/providers/aws/resource_aws_elb.go
index 54b43572a..11d9bb7b7 100644
--- a/builtin/providers/aws/resource_aws_elb.go
+++ b/builtin/providers/aws/resource_aws_elb.go
@@ -41,6 +41,7 @@ func resourceAwsElb() *schema.Resource {
 				Elem:     &schema.Schema{Type: schema.TypeString},
 				Optional: true,
 				ForceNew: true,
+				Computed: true,
 				Set: func(v interface{}) int {
 					return hashcode.String(v.(string))
 				},