diff --git a/code/modules/mob/living/basic/bots/bot_ai.dm b/code/modules/mob/living/basic/bots/bot_ai.dm
index 509cd4aa355..a5f8202e66e 100644
--- a/code/modules/mob/living/basic/bots/bot_ai.dm
+++ b/code/modules/mob/living/basic/bots/bot_ai.dm
@@ -63,6 +63,8 @@
 	source.clear_path_hud(remove_hud = FALSE)
 
 /datum/ai_controller/basic_controller/bot/proc/add_to_blacklist(atom/target, duration)
+	if(QDELETED(target))
+		return
 	var/final_duration = duration || blackboard[BB_UNREACHABLE_LIST_COOLDOWN]
 	set_blackboard_key_assoc_lazylist(BB_TEMPORARY_IGNORE_LIST, target, TRUE)
 	addtimer(CALLBACK(src, PROC_REF(remove_from_blacklist), target), final_duration)