diff --git a/code/modules/mob/living/carbon/xenomorph/abilities/lurker/lurker_powers.dm b/code/modules/mob/living/carbon/xenomorph/abilities/lurker/lurker_powers.dm
index 51f23f22a09f..f16511ca63f7 100644
--- a/code/modules/mob/living/carbon/xenomorph/abilities/lurker/lurker_powers.dm
+++ b/code/modules/mob/living/carbon/xenomorph/abilities/lurker/lurker_powers.dm
@@ -344,6 +344,12 @@
 	xeno.visible_message(SPAN_DANGER("[xeno] grabs [target_carbon]’s head aggressively."), \
 	SPAN_XENOWARNING("We grab [target_carbon]’s head aggressively."))
 
+	if(HAS_TRAIT(target_carbon, TRAIT_NESTED) || (target_carbon.status_flags & XENO_HOST))
+		for(var/obj/item/alien_embryo/embryo in target_carbon)
+			if(HIVE_ALLIED_TO_HIVE(xeno.hivenumber, embryo.hivenumber))
+				to_chat(xeno, SPAN_WARNING("We should not harm this host! It has a sister inside."))
+				return
+
 	if(!do_after(xeno, 0.8 SECONDS, INTERRUPT_NO_NEEDHAND, BUSY_ICON_HOSTILE, numticks = 2)) // would be 0.75 but that doesn't really work with numticks
 		return