diff --git a/src/pocketmine/MemoryManager.php b/src/pocketmine/MemoryManager.php
index 9c6eb50edd..338bb37e1a 100644
--- a/src/pocketmine/MemoryManager.php
+++ b/src/pocketmine/MemoryManager.php
@@ -105,7 +105,7 @@ class MemoryManager{
 		if($this->chunkTrigger and $this->chunkCollect){
 			foreach($this->server->getLevels() as $level){
 				$level->doChunkGarbageCollection();
-			}	
+			}
 		}
 
 		$ev = new LowMemoryEvent($memory, $limit, $global, $triggerCount);
diff --git a/src/pocketmine/resources/pocketmine.yml b/src/pocketmine/resources/pocketmine.yml
index 8400fa9710..d1006ac67b 100644
--- a/src/pocketmine/resources/pocketmine.yml
+++ b/src/pocketmine/resources/pocketmine.yml
@@ -43,9 +43,9 @@ memory:
  continuous-trigger-rate: 30
 
  garbage-collection:
-  #Period in ticks to fire the garbage collector manually (default 10 minutes), set to 0 to disable
+  #Period in ticks to fire the garbage collector manually (default 30 minutes), set to 0 to disable
   #This only affect the main thread. Other threads should fire their own collections
-  period: 12000
+  period: 36000
 
   #Fire asynchronous tasks to collect garbage from workers
   collect-async-worker: true