diff --git a/common/scripted_effects/wc_race_effects.txt b/common/scripted_effects/wc_race_effects.txt
index 5a07a062dc..d724eaa5ce 100644
--- a/common/scripted_effects/wc_race_effects.txt
+++ b/common/scripted_effects/wc_race_effects.txt
@@ -489,7 +489,10 @@ set_race_effect = {
 			OR = {
 				is_being_gene_trigger = { BEING = being_undead }
 				has_trait_with_flag = undead_class
-				culture = { has_cultural_pillar = heritage_undead } 
+				AND = {
+					culture = { has_cultural_pillar = heritage_undead } 
+					age >= 16
+				}
 			}
 		}
 		become_undead_no_notification_event_effect = yes