diff --git a/src/Config/HostsFile.php b/src/Config/HostsFile.php
index 5b6277e7..c9e66da7 100644
--- a/src/Config/HostsFile.php
+++ b/src/Config/HostsFile.php
@@ -73,6 +73,8 @@ public static function loadFromPathBlocking($path = null)
         return new self($contents);
     }
 
+    private $contents;
+
     /**
      * Instantiate new hosts file with the given hosts file contents
      *
diff --git a/src/Query/UdpTransportExecutor.php b/src/Query/UdpTransportExecutor.php
index a928f66c..64de88a6 100644
--- a/src/Query/UdpTransportExecutor.php
+++ b/src/Query/UdpTransportExecutor.php
@@ -87,6 +87,7 @@
  */
 final class UdpTransportExecutor implements ExecutorInterface
 {
+    private $nameserver;
     private $loop;
     private $parser;
     private $dumper;