diff --git a/update_engine.rc b/update_engine.rc
index 0576045..a7d6235 100644
--- a/update_engine.rc
+++ b/update_engine.rc
@@ -3,3 +3,7 @@
     user root
     group root system wakelock inet cache
     writepid /dev/cpuset/system-background/tasks
+    disabled
+
+on property:ro.boot.slot_suffix=*
+    enable update_engine