diff --git a/builtin/providers/aws/resource_aws_elasticache_cluster.go b/builtin/providers/aws/resource_aws_elasticache_cluster.go
index 18a4ddf41..d03ae89e8 100644
--- a/builtin/providers/aws/resource_aws_elasticache_cluster.go
+++ b/builtin/providers/aws/resource_aws_elasticache_cluster.go
@@ -141,6 +141,7 @@ func resourceAwsElasticacheCluster() *schema.Resource {
 			"snapshot_window": &schema.Schema{
 				Type:     schema.TypeString,
 				Optional: true,
+				Computed: true,
 			},
 
 			"snapshot_retention_limit": &schema.Schema{