diff --git a/builtin/providers/aws/resource_aws_autoscaling_policy.go b/builtin/providers/aws/resource_aws_autoscaling_policy.go
index 3c91bd32b6..6d24030502 100644
--- a/builtin/providers/aws/resource_aws_autoscaling_policy.go
+++ b/builtin/providers/aws/resource_aws_autoscaling_policy.go
@@ -54,6 +54,7 @@ func resourceAwsAutoscalingPolicy() *schema.Resource {
 			"metric_aggregation_type": &schema.Schema{
 				Type:     schema.TypeString,
 				Optional: true,
+				Computed: true,
 			},
 			"min_adjustment_magnitude": &schema.Schema{
 				Type:     schema.TypeInt,