diff --git a/src/resourcepacks/ZippedResourcePack.php b/src/resourcepacks/ZippedResourcePack.php
index 9f2593c84..9e9efb757 100644
--- a/src/resourcepacks/ZippedResourcePack.php
+++ b/src/resourcepacks/ZippedResourcePack.php
@@ -105,7 +105,6 @@ class ZippedResourcePack implements ResourcePack{
 		}
 
 		$mapper = new \JsonMapper();
-		$mapper->bExceptionOnUndefinedProperty = true;
 		$mapper->bExceptionOnMissingData = true;
 
 		try{