diff --git a/registry/storage/driver/s3-aws/s3.go b/registry/storage/driver/s3-aws/s3.go
index 8753b345..92f4af07 100644
--- a/registry/storage/driver/s3-aws/s3.go
+++ b/registry/storage/driver/s3-aws/s3.go
@@ -151,6 +151,8 @@ func (factory *s3DriverFactory) Create(parameters map[string]interface{}) (stora
 	return FromParameters(parameters)
 }
 
+var _ storagedriver.StorageDriver = &driver{}
+
 type driver struct {
 	S3                          *s3.S3
 	Bucket                      string