diff --git a/tests/robotests/src/com/android/settings/testutils/shadow/ShadowStorageManager.java b/tests/robotests/src/com/android/settings/testutils/shadow/ShadowStorageManager.java
index d45c2ca67d5..8dc3b8f9502 100644
--- a/tests/robotests/src/com/android/settings/testutils/shadow/ShadowStorageManager.java
+++ b/tests/robotests/src/com/android/settings/testutils/shadow/ShadowStorageManager.java
@@ -31,7 +31,7 @@ import java.util.ArrayList;
 import java.util.List;
 
 @Implements(StorageManager.class)
-public class ShadowStorageManager {
+public class ShadowStorageManager extends org.robolectric.shadows.ShadowStorageManager {
 
     private static boolean sIsUnmountCalled;
     private static boolean sIsForgetCalled;