diff --git a/code/modules/tgui/modules/appearance_changer.dm b/code/modules/tgui/modules/appearance_changer.dm
index 369cd9f2290..b125338b306 100644
--- a/code/modules/tgui/modules/appearance_changer.dm
+++ b/code/modules/tgui/modules/appearance_changer.dm
@@ -92,7 +92,8 @@
 			if(can_change(APPEARANCE_RACE) && (params["race"] in valid_species))
 				if(target.change_species(params["race"]))
 					if(params["race"] == "Custom Species")
-						target.custom_species = input(usr,"Custom Species name:","Species Name")
+						target.custom_species = sanitize(input(usr, "Input custom species name:",
+							"Custom Species Name") as null|text, MAX_NAME_LEN)
 					cut_data()
 					generate_data(usr)
 					changed_hook(APPEARANCECHANGER_CHANGED_RACE)