diff --git a/code/game/machinery/doors/windowdoor.dm b/code/game/machinery/doors/windowdoor.dm
index f04b401a26..c9c577231e 100644
--- a/code/game/machinery/doors/windowdoor.dm
+++ b/code/game/machinery/doors/windowdoor.dm
@@ -182,7 +182,7 @@
 	density = TRUE
 	air_update_turf(1)
 	update_freelook_sight()
-	addtimer(CALLBACK(.proc/finish_closing), 10)
+	addtimer(CALLBACK(src, .proc/finish_closing), 10)
 	return TRUE
 
 /obj/machinery/door/window/proc/finish_closing()