diff --git a/code/game/objects/items/stacks/sheets/glass.dm b/code/game/objects/items/stacks/sheets/glass.dm
index c6fb354c11..d1aa5e73fe 100644
--- a/code/game/objects/items/stacks/sheets/glass.dm
+++ b/code/game/objects/items/stacks/sheets/glass.dm
@@ -192,6 +192,10 @@ var/global/list/datum/stack_recipe/reinforced_glass_recipes = list ( \
 			var/mob/living/carbon/human/H = AM
 			if(PIERCEIMMUNE in H.dna.species.species_traits)
 				return
+			if(H.dna.species.id == "slime")
+				return
+			if(H.dna.species.id == "jelly")
+				return
 			var/picked_def_zone = pick("l_leg", "r_leg")
 			var/obj/item/bodypart/O = H.get_bodypart(picked_def_zone)
 			if(!istype(O))