diff --git a/code/game/machinery/doors/airlock.dm b/code/game/machinery/doors/airlock.dm
index dbd40409c09e..e8db9dd63875 100644
--- a/code/game/machinery/doors/airlock.dm
+++ b/code/game/machinery/doors/airlock.dm
@@ -76,7 +76,7 @@ GLOBAL_LIST_INIT(airlock_wire_descriptions, list(
 
 /obj/structure/machinery/door/airlock/Destroy()
 	QDEL_NULL_LIST(attached_signallers)
-	QDEL_NULL(closeOther)
+	closeOther = null
 	QDEL_NULL(electronics)
 	return ..()