diff --git a/src/inventory/CreativeInventory.php b/src/inventory/CreativeInventory.php
index c9eced613..136f2da92 100644
--- a/src/inventory/CreativeInventory.php
+++ b/src/inventory/CreativeInventory.php
@@ -38,8 +38,14 @@ final class CreativeInventory{
 
 	private function __construct(){
 		$creativeItems = json_decode(file_get_contents(Path::join(\pocketmine\BEDROCK_DATA_PATH, "creativeitems.json")), true);
+		if(!is_array($creativeItems)){
+			throw new SavedDataLoadingException("Invalid creative items file, expected array as root type");
+		}
 
 		foreach($creativeItems as $data){
+			if(!is_array($data)){
+				throw new SavedDataLoadingException("Invalid creative items file, expected array as item type");
+			}
 			try{
 				$item = Item::legacyJsonDeserialize($data);
 			}catch(SavedDataLoadingException){