diff --git a/Android.bp b/Android.bp
index effd7ce..3709d75 100644
--- a/Android.bp
+++ b/Android.bp
@@ -503,6 +503,13 @@
 }
 
 filegroup {
+    name: "framework-android-os-unit-testable-src",
+    srcs: [
+        "core/java/android/os/DdmSyncState.java",
+    ],
+}
+
+filegroup {
     name: "framework-networkstack-shared-srcs",
     srcs: [
         // TODO: remove these annotations as soon as we can use andoid.support.annotations.*