diff --git a/bootstat/boot_reason_test.sh b/bootstat/boot_reason_test.sh
index b194bbe..01b8948 100755
--- a/bootstat/boot_reason_test.sh
+++ b/bootstat/boot_reason_test.sh
@@ -312,6 +312,7 @@
 init    : processing action (ro.boot.bootreason=*) from (/system/etc/init/bootstat.rc
 init    : processing action (sys.boot_completed=1 && sys.logbootcomplete=1) from (/system/etc/init/bootstat.rc
  (/system/bin/bootstat --record_boot_complete --record_boot_reason --record_time_since_factory_reset -l)'
+ (/system/bin/bootstat --set_system_boot_reason --record_boot_complete --record_boot_reason --record_time_since_factory_reset -l)'
  (/system/bin/bootstat -r post_decrypt_time_elapsed)'
 init    : Command 'exec - system log -- /system/bin/bootstat --record_boot_complete' action=sys.boot_completed=1 && sys.logbootcomplete=1 (/system/etc/init/bootstat.rc:
 init    : Command 'exec - system log -- /system/bin/bootstat --record_boot_reason' action=sys.boot_completed=1 && sys.logbootcomplete=1 (/system/etc/init/bootstat.rc:
@@ -582,9 +583,9 @@
   duration_test
   case ${TEST} in
     bootloader | recovery | cold | hard | warm ) reason=${TEST} ;;
-    *)                                           reason=reboot,${TEST} ;;
+    *)                                           reason=reboot,${TEST#optional_} ;;
   esac
-  adb reboot ${TEST}
+  adb reboot ${TEST#optional_}
   wait_for_screen
   bootloader_reason=`validate_property ro.boot.bootreason`
   EXPECT_PROPERTY ro.boot.bootreason ${bootloader_reason}
@@ -948,6 +949,20 @@
   report_bootstat_logs reboot,adb
 }
 
+[ "USAGE: test_rescueparty
+
+rescueparty test
+- adb reboot rescueparty
+- (wait until screen is up, boot has completed)
+- adb shell getprop sys.boot.reason
+- adb shell getprop ro.boot.bootreason
+- NB: should report reboot,rescueparty" ]
+test_optional_rescueparty() {
+  blind_reboot_test
+  echo "WARNING: legacy devices are allowed to fail following ro.boot.bootreason result" >&2
+  EXPECT_PROPERTY ro.boot.bootreason reboot,rescueparty
+}
+
 [ "USAGE: test_Its_Just_So_Hard_reboot
 
 Its Just So Hard reboot test: