diff --git a/code/controllers/subsystem/processing/tramprocess.dm b/code/controllers/subsystem/processing/tramprocess.dm
index f72ba30ddee..6e1b98ead39 100644
--- a/code/controllers/subsystem/processing/tramprocess.dm
+++ b/code/controllers/subsystem/processing/tramprocess.dm
@@ -1,5 +1,6 @@
 PROCESSING_SUBSYSTEM_DEF(tramprocess)
 	name = "Tram Process"
 	wait = 1
-	/// only used on maps with trams, so only enabled by such.
+	flags = SS_TICKER
+	// only used on maps with trams, so only enabled by such.
 	can_fire = FALSE