diff --git a/code/game/machinery/teleporter.dm b/code/game/machinery/teleporter.dm
index 1fec2e76069..82b19052d4a 100644
--- a/code/game/machinery/teleporter.dm
+++ b/code/game/machinery/teleporter.dm
@@ -130,6 +130,10 @@
 			O.show_message("\red Failure: Cannot authenticate locked on coordinates. Please reinstate coordinate matrix.")
 		return
 	if (istype(M, /atom/movable))
+		if (istype(M, /obj/effect/dummy/chameleon))
+			for(var/mob/C in M)
+				C << "\red The projection field prevents you from entering!"
+			return
 		if(prob(5) && !accurate) //oh dear a problem, put em in deep space
 			do_teleport(M, locate(rand(5, world.maxx - 5), rand(5, world.maxy - 5), 3), 2)
 		else