diff --git a/builtin/providers/aws/resource_aws_instance.go b/builtin/providers/aws/resource_aws_instance.go
index a5dfa4b6f..331c469d8 100644
--- a/builtin/providers/aws/resource_aws_instance.go
+++ b/builtin/providers/aws/resource_aws_instance.go
@@ -41,6 +41,7 @@ func resourceAwsInstance() *schema.Resource {
 			"associate_public_ip_address": &schema.Schema{
 				Type:     schema.TypeBool,
 				ForceNew: true,
+				Computed: true,
 				Optional: true,
 			},