diff --git a/google/data_source_google_compute_region_instance_group_test.go b/google/data_source_google_compute_region_instance_group_test.go
index 289a7d59..e7282467 100644
--- a/google/data_source_google_compute_region_instance_group_test.go
+++ b/google/data_source_google_compute_region_instance_group_test.go
@@ -68,7 +68,7 @@ resource "google_compute_region_instance_group_manager" "foo" {
 	instance_template = "${google_compute_instance_template.foo.self_link}"
 	region = "us-central1"
 	target_pools = ["${google_compute_target_pool.foo.self_link}"]
-	target_size = 10
+	target_size = 1
 
 	named_port {
 		name = "web"