diff --git a/code/__defines/integrated_circuits.dm b/code/__defines/integrated_circuits.dm
index b2859a232d..03cfa358e3 100644
--- a/code/__defines/integrated_circuits.dm
+++ b/code/__defines/integrated_circuits.dm
@@ -1,3 +1,4 @@
 // Methods of obtaining a circuit.
 #define IC_SPAWN_DEFAULT			1 // If the circuit comes in the default circuit box and able to be printed in the IC printer.
-#define IC_SPAWN_RESEARCH 			2 // If the circuit design will be available in the IC printer after upgrading it.
\ No newline at end of file
+#define IC_SPAWN_RESEARCH 			2 // If the circuit design will be available in the IC printer after upgrading it.
+#define IC_SPAWN_ILLEGAL 			3 // If the circuit design will be available if upgrading the IC printer illegally.
\ No newline at end of file
diff --git a/code/modules/integrated_electronics/core/printer.dm b/code/modules/integrated_electronics/core/printer.dm
index 2089e87afb..77f0de7b04 100644
--- a/code/modules/integrated_electronics/core/printer.dm
+++ b/code/modules/integrated_electronics/core/printer.dm
@@ -11,6 +11,7 @@
 	var/debug = FALSE // If true, metal is infinite.
 
 	var/upgraded = FALSE		// When hit with an upgrade disk, will turn true, allowing it to print the higher tier circuits.
+	var/illegal_upgraded = FALSE // When hit with an illegal upgrade disk, will turn true, allowing it to print the illegal circuits.
 	var/can_clone = FALSE		// Same for above, but will allow the printer to duplicate a specific assembly. (Not implemented)
 //	var/static/list/recipe_list = list()
 	var/obj/item/device/electronic_assembly/assembly_to_clone = null // Not implemented x3
@@ -68,6 +69,16 @@
 		attack_self(user)
 		return TRUE
 
+	if(istype(O,/obj/item/weapon/disk/integrated_circuit/upgrade/illegal))
+		if(illegal_upgraded)
+			to_chat(user, span("warning", "\The [src] already has this upgrade."))
+			return TRUE
+		to_chat(user, span("notice", "You install \the [O] into  \the [src]."))
+		illegal_upgraded = TRUE
+		dirty_items = TRUE
+		attack_self(user)
+		return TRUE
+
 	if(istype(O,/obj/item/weapon/disk/integrated_circuit/upgrade/clone))
 		if(can_clone)
 			to_chat(user, span("warning", "\The [src] already has this upgrade."))
@@ -212,6 +223,10 @@
 	name = "integrated circuit printer upgrade disk - advanced designs"
 	desc = "Install this into your integrated circuit printer to enhance it.  This one adds new, advanced designs to the printer."
 
+/obj/item/weapon/disk/integrated_circuit/upgrade/illegal
+	name = "integrated circuit printer upgrade disk - illegal designs"
+	desc = "Install this into your integrated circuit printer to enhance it.  This one adds new, but illegal designs to the printer."
+
 // To be implemented later.
 /obj/item/weapon/disk/integrated_circuit/upgrade/clone
 	name = "integrated circuit printer upgrade disk - circuit cloner"