diff --git a/tests/BlobStoreTestUtils/src/com/android/utils/blob/DummyBlobData.java b/tests/BlobStoreTestUtils/src/com/android/utils/blob/DummyBlobData.java
index 35a6c26ec73fc..371375c0d9324 100644
--- a/tests/BlobStoreTestUtils/src/com/android/utils/blob/DummyBlobData.java
+++ b/tests/BlobStoreTestUtils/src/com/android/utils/blob/DummyBlobData.java
@@ -77,7 +77,7 @@ public class DummyBlobData {
             return mRandomSeed;
         }
 
-        public Builder setFileSize(int fileSize) {
+        public Builder setFileSize(long fileSize) {
             mFileSize = fileSize;
             return this;
         }
diff --git a/tests/BlobStoreTestUtils/src/com/android/utils/blob/Utils.java b/tests/BlobStoreTestUtils/src/com/android/utils/blob/Utils.java
index 482b23f129fdb..6927e86213d82 100644
--- a/tests/BlobStoreTestUtils/src/com/android/utils/blob/Utils.java
+++ b/tests/BlobStoreTestUtils/src/com/android/utils/blob/Utils.java
@@ -34,6 +34,9 @@ import java.io.OutputStream;
 public class Utils {
     public static final int BUFFER_SIZE_BYTES = 16 * 1024;
 
+    public static final long KB_IN_BYTES = 1000;
+    public static final long MB_IN_BYTES = KB_IN_BYTES * 1000;
+
     public static void copy(InputStream in, OutputStream out, long lengthBytes)
             throws IOException {
         final byte[] buffer = new byte[BUFFER_SIZE_BYTES];