diff --git a/code/game/objects/structures.dm b/code/game/objects/structures.dm
index 9246a00399..1d36b2b41b 100644
--- a/code/game/objects/structures.dm
+++ b/code/game/objects/structures.dm
@@ -37,7 +37,7 @@
 		structureclimber.visible_message("<span class='warning'>[structureclimber] has been knocked off [src].", "You're knocked off [src]!", "You see [structureclimber] get knocked off [src].</span>")
 
 /obj/structure/ui_act(action, params)
-	..()
+	. = ..()
 	add_fingerprint(usr)
 
 /obj/structure/MouseDrop_T(atom/movable/O, mob/user)