diff --git a/authfs/tests/Android.bp b/authfs/tests/Android.bp
index ca403e8..c8d780d 100644
--- a/authfs/tests/Android.bp
+++ b/authfs/tests/Android.bp
@@ -15,6 +15,7 @@
     ],
     test_suites: ["general-tests"],
     data_device_bins: ["open_then_run"],
+    per_testcase_directory: true,
     data: [
         ":authfs_test_files",
         ":MicrodroidTestApp.signed",