From 8d08840ea4a55945b696fa9aef5d399178fd4203 Mon Sep 17 00:00:00 2001
From: "Dylan K. Taylor" <odigiman@gmail.com>
Date: Sat, 23 Dec 2017 10:45:59 +0000
Subject: [PATCH] Effect: Better fix for duration bug seen in
 3614711a027c55df1723eefae36b4a79397e6e95

---
 src/pocketmine/entity/Living.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/pocketmine/entity/Living.php b/src/pocketmine/entity/Living.php
index e2b9447f3..39610ff2c 100644
--- a/src/pocketmine/entity/Living.php
+++ b/src/pocketmine/entity/Living.php
@@ -544,7 +544,7 @@ abstract class Living extends Entity implements Damageable{
 			if($effect->canTick()){
 				$effect->applyEffect($this);
 			}
-			$effect->setDuration($effect->getDuration() - $tickDiff);
+			$effect->setDuration(max(0, $effect->getDuration() - $tickDiff));
 			if($effect->getDuration() <= 0){
 				$this->removeEffect($effect->getId());
 			}