diff --git a/resource_compute_instance.go b/resource_compute_instance.go
index c7f0f8d3..3d03d437 100644
--- a/resource_compute_instance.go
+++ b/resource_compute_instance.go
@@ -128,6 +128,7 @@ func resourceComputeInstance() *schema.Resource {
 				Type:     schema.TypeList,
 				Optional: true,
 				ForceNew: true,
+				Deprecated: "Please use network_interface",
 				Elem: &schema.Resource{
 					Schema: map[string]*schema.Schema{
 						"source": &schema.Schema{