diff --git a/code/modules/food/kitchen/smartfridge/engineering.dm b/code/modules/food/kitchen/smartfridge/engineering.dm
index 721f5040dac..ed370ef3fd7 100644
--- a/code/modules/food/kitchen/smartfridge/engineering.dm
+++ b/code/modules/food/kitchen/smartfridge/engineering.dm
@@ -16,7 +16,7 @@
 	persistent = /datum/persistent/storage/smartfridge/sheet_storage/lossy
 
 /obj/machinery/smartfridge/sheets/accept_check(var/obj/item/O)
-	return istype(O, /obj/item/stack/material)
+	return istype(O, /obj/item/stack/material) && !istype(O, /obj/item/stack/material/cyborg)
 
 /obj/machinery/smartfridge/sheets/vend(datum/stored_item/stack/I, var/count)
 	var/amount = I.get_amount()
@@ -48,4 +48,4 @@
 /obj/machinery/smartfridge/sheets/mining/persistent
 	persistent = /datum/persistent/storage/smartfridge/sheet_storage
 /obj/machinery/smartfridge/sheets/mining/persistent_lossy
-	persistent = /datum/persistent/storage/smartfridge/sheet_storage/lossy
\ No newline at end of file
+	persistent = /datum/persistent/storage/smartfridge/sheet_storage/lossy
diff --git a/code/modules/persistence/storage/smartfridge.dm b/code/modules/persistence/storage/smartfridge.dm
index 44b5b3abdb2..fd019cfa130 100644
--- a/code/modules/persistence/storage/smartfridge.dm
+++ b/code/modules/persistence/storage/smartfridge.dm
@@ -55,7 +55,7 @@
 	. = list()
 	for(var/obj/item/stack/material/S as anything in L)
 		var/real_path = istext(S) ? text2path(S) : S
-		if(!ispath(real_path, /obj/item/stack/material))
+		if(!ispath(real_path, /obj/item/stack/material) || ispath(real_path, /obj/item/stack/material/cyborg))
 			log_debug("Warning: Sheet_storage persistent datum tried to create [S]")
 			continue