diff --git a/System/Snowflake.php b/System/Snowflake.php
index e35947f2..ed2c8a26 100644
--- a/System/Snowflake.php
+++ b/System/Snowflake.php
@@ -352,7 +352,7 @@ class Snowflake
 			return;
 		}
 		$file = static::$_autoload[$className];
-		include_once "$file";
+		require_once "$file";
 	}