diff --git a/src/world/World.php b/src/world/World.php
index 65ded6fa4..382a3479a 100644
--- a/src/world/World.php
+++ b/src/world/World.php
@@ -493,7 +493,7 @@ class World implements ChunkManager{
 
 		foreach(BlockFactory::getInstance()->getAllKnownStates() as $state){
 			$dontTickName = $dontTickBlocks[$state->getTypeId()] ?? null;
-			if($dontTickName === null && !$state->ticksRandomly()){
+			if($dontTickName === null && $state->ticksRandomly()){
 				$this->randomTickBlocks[$state->getFullId()] = true;
 			}
 		}