diff --git a/code/modules/mob/living/simple_animal/hostile/megafauna/ancient_robot.dm b/code/modules/mob/living/simple_animal/hostile/megafauna/ancient_robot.dm
index 1fb6bc301d2..8719d9d0d00 100644
--- a/code/modules/mob/living/simple_animal/hostile/megafauna/ancient_robot.dm
+++ b/code/modules/mob/living/simple_animal/hostile/megafauna/ancient_robot.dm
@@ -491,7 +491,7 @@ Difficulty: Hard
 		if(stat == DEAD)
 			continue
 		anger++
-	if(health <= health / 2)
+	if(health <= maxHealth / 2)
 		anger += 2
 	if(enraged)
 		anger += 2