diff --git a/code/game/machinery/bots/cleanbot.dm b/code/game/machinery/bots/cleanbot.dm
index d0345f60905..aa274e505eb 100644
--- a/code/game/machinery/bots/cleanbot.dm
+++ b/code/game/machinery/bots/cleanbot.dm
@@ -298,6 +298,7 @@ text("<A href='?src=\ref[src];operation=oddbutton'>[src.oddbutton ? "Yes" : "No"
 	target_types += /obj/effect/decal/cleanable/robot_debris
 	target_types += /obj/effect/decal/cleanable/crayon
 	target_types += /obj/effect/decal/cleanable/liquid_fuel
+	target_types += /obj/effect/decal/cleanable/mucus
 
 	if(src.blood)
 		target_types += /obj/effect/decal/cleanable/xenoblood/