diff --git a/src/Options/Streams/Stream.php b/src/Options/Streams/Stream.php
index 99c638b..abdf083 100644
--- a/src/Options/Streams/Stream.php
+++ b/src/Options/Streams/Stream.php
@@ -77,7 +77,7 @@ public static function input(string $input)
      */
     protected function __getStreamSelector()
     {
-        if (!$this->stream_selector) {
+        if (!isset($this->stream_selector)) {
             return null;
         }