diff --git a/gcs/gcstesting/bucket_tests.go b/gcs/gcstesting/bucket_tests.go
index <HASH>..<HASH> 100644
--- a/gcs/gcstesting/bucket_tests.go
+++ b/gcs/gcstesting/bucket_tests.go
@@ -76,8 +76,8 @@ type bucketTest struct {
 var _ bucketTestSetUpInterface = &bucketTest{}
 
 func (t *bucketTest) setUpBucketTest(deps BucketTestDeps) {
-	t.bucket = deps.bucket
-	t.clock = deps.clock
+	t.bucket = deps.Bucket
+	t.clock = deps.Clock
 	t.ctx = context.Background()
 }
 
diff --git a/gcs/gcstesting/register_bucket_tests.go b/gcs/gcstesting/register_bucket_tests.go
index <HASH>..<HASH> 100644
--- a/gcs/gcstesting/register_bucket_tests.go
+++ b/gcs/gcstesting/register_bucket_tests.go
@@ -27,10 +27,10 @@ import (
 // Dependencies needed for tests registered by RegisterBucketTests.
 type BucketTestDeps struct {
 	// An initialized, empty bucket.
-	bucket gcs.Bucket
+	Bucket gcs.Bucket
 
 	// A clock matching the bucket's notion of time.
-	clock timeutil.Clock
+	Clock timeutil.Clock
 }
 
 // An interface that all bucket tests must implement.
Oops, export bucket and clock fields.