diff --git a/command/test-fixtures/plan/main.tf b/command/test-fixtures/plan/main.tf
index 5794f94d9d..1ae9390485 100644
--- a/command/test-fixtures/plan/main.tf
+++ b/command/test-fixtures/plan/main.tf
@@ -1,3 +1,8 @@
 resource "test_instance" "foo" {
     ami = "bar"
+
+    network_interface {
+      device_index = 0
+      description = "Main network interface"
+    }
 }