diff --git a/interface/ri_install.py b/interface/ri_install.py
index adb9ea8..66038dd 100644
--- a/interface/ri_install.py
+++ b/interface/ri_install.py
@@ -42,7 +42,7 @@ def install_over(ret):
             print "shutdown ..."
             os.system("sync")
             os.system("eject")
-            os.system("echo b >/proc/sysrq-trigger")
+            os.system("echo o >/proc/sysrq-trigger")
         elif ret_set_task_over == 'nothing':
             display.root_destroy()