diff --git a/src/event/entity/EntityDamageByEntityEvent.php b/src/event/entity/EntityDamageByEntityEvent.php
index 5ef6c4b8e..052be9a15 100644
--- a/src/event/entity/EntityDamageByEntityEvent.php
+++ b/src/event/entity/EntityDamageByEntityEvent.php
@@ -57,7 +57,7 @@ class EntityDamageByEntityEvent extends EntityDamageEvent{
 				$this->setModifier($this->getBaseDamage() * 0.3 * $strength->getEffectLevel(), self::MODIFIER_STRENGTH);
 			}
 
-			if(($weakness = $effects->get(VanillaEffects::WEAKNESS())) !== null){
+			if(($weakness = $effects->get(VanillaEffects::WEAKNESS())) !== null && $this->getCause() === EntityDamageEvent::CAUSE_ENTITY_ATTACK){
 				$this->setModifier(-($this->getBaseDamage() * 0.2 * $weakness->getEffectLevel()), self::MODIFIER_WEAKNESS);
 			}
 		}