diff --git a/src/pocketmine/utils/Config.php b/src/pocketmine/utils/Config.php
index 9831e7465..a2b3df30f 100644
--- a/src/pocketmine/utils/Config.php
+++ b/src/pocketmine/utils/Config.php
@@ -342,7 +342,7 @@ class Config{
 		}
 
 		$base = $value;
-		$this->nestedCache[$key] = $value;
+		$this->nestedCache = [];
 	}
 
 	/**