diff --git a/tests/hostside/helper/java/com/android/microdroid/test/host/MicrodroidHostTestCaseBase.java b/tests/hostside/helper/java/com/android/microdroid/test/host/MicrodroidHostTestCaseBase.java
index 81ccec7..2d1ab9d 100644
--- a/tests/hostside/helper/java/com/android/microdroid/test/host/MicrodroidHostTestCaseBase.java
+++ b/tests/hostside/helper/java/com/android/microdroid/test/host/MicrodroidHostTestCaseBase.java
@@ -38,7 +38,7 @@
 import java.util.Arrays;
 
 public abstract class MicrodroidHostTestCaseBase extends BaseHostJUnit4Test {
-    protected static final String TEST_ROOT = "/data/local/tmp/virt/";
+    protected static final String TEST_ROOT = "/data/local/tmp/virt/tradefed";
     protected static final String LOG_PATH = TEST_ROOT + "log.txt";
     protected static final String CONSOLE_PATH = TEST_ROOT + "console.txt";
     private static final int TEST_VM_ADB_PORT = 8000;