diff --git a/lua/SS13_base.lua b/lua/SS13_base.lua
index 23f464bf328..470288af87e 100644
--- a/lua/SS13_base.lua
+++ b/lua/SS13_base.lua
@@ -39,6 +39,13 @@ function SS13.is_valid(datum)
 	return dm.is_valid_ref(datum) and not datum.gc_destroyed
 end
 
+function SS13.check_tick(high_priority)
+	local tick_limit = if high_priority then 95 else dm.global_vars.Master.current_ticklimit
+	if dm.world.tick_usage > tick_limit then
+		sleep()
+	end
+end
+
 function SS13.await(thing_to_call, proc_to_call, ...)
 	if not SS13.istype(thing_to_call, "/datum") then
 		thing_to_call = SS13.global_proc