diff --git a/code/controllers/master.dm b/code/controllers/master.dm
index 346a63684ef..59b76538b02 100644
--- a/code/controllers/master.dm
+++ b/code/controllers/master.dm
@@ -356,7 +356,7 @@ GLOBAL_REAL(Master, /datum/controller/master) = new
 	//(higher subsystems will be sooner in the queue, adding them later in the loop means we don't have to loop thru them next queue add)
 	sortTim(tickersubsystems, /proc/cmp_subsystem_priority)
 	for(var/I in runlevel_sorted_subsystems)
-		sortTim(runlevel_sorted_subsystems, /proc/cmp_subsystem_priority)
+		sortTim(I, /proc/cmp_subsystem_priority)
 		I += tickersubsystems
 
 	var/cached_runlevel = current_runlevel