diff --git a/src/pocketmine/command/defaults/SetWorldSpawnCommand.php b/src/pocketmine/command/defaults/SetWorldSpawnCommand.php
index 23ef04c97..d65b45fbe 100644
--- a/src/pocketmine/command/defaults/SetWorldSpawnCommand.php
+++ b/src/pocketmine/command/defaults/SetWorldSpawnCommand.php
@@ -46,7 +46,7 @@ class SetWorldSpawnCommand extends VanillaCommand{
 		if(count($args) === 0){
 			if($sender instanceof Player){
 				$level = $sender->getLevel();
-				$pos = $sender->round();
+				$pos = Vector3::cloneVector($sender)->round();
 			}else{
 				$sender->sendMessage(TextFormat::RED . "You can only perform this command as a player");