diff --git a/code/modules/nano/modules/human_appearance.dm b/code/modules/nano/modules/human_appearance.dm
index 069a2195465..9c533c04384 100644
--- a/code/modules/nano/modules/human_appearance.dm
+++ b/code/modules/nano/modules/human_appearance.dm
@@ -93,6 +93,10 @@
 	return 0
 
 /obj/nano_module/appearance_changer/ui_interact(mob/user, ui_key = "main", var/datum/nanoui/ui = null, var/force_open = 1, var/datum/topic_state/state = default_state)
+
+	if(!owner || !owner.species)
+		return
+
 	generate_data(check_whitelist, whitelist, blacklist)
 	var/data[0]