diff --git a/src/pocketmine/entity/Entity.php b/src/pocketmine/entity/Entity.php
index e386379e6..2722297b3 100644
--- a/src/pocketmine/entity/Entity.php
+++ b/src/pocketmine/entity/Entity.php
@@ -602,10 +602,11 @@ abstract class Entity extends Location implements Metadatable{
 	 *
 	 */
 	public function attack($damage, EntityDamageEvent $source){
-		if($this->hasEffect(Effect::FIRE_RESISTANCE)
-			and $source->getCause() === EntityDamageEvent::CAUSE_FIRE
-			and $source->getCause() === EntityDamageEvent::CAUSE_FIRE_TICK
-			and $source->getCause() === EntityDamageEvent::CAUSE_LAVA
+		if($this->hasEffect(Effect::FIRE_RESISTANCE) and (
+				$source->getCause() === EntityDamageEvent::CAUSE_FIRE
+				or $source->getCause() === EntityDamageEvent::CAUSE_FIRE_TICK
+				or $source->getCause() === EntityDamageEvent::CAUSE_LAVA
+			)
 		){
 			$source->setCancelled();
 		}