diff --git a/Input/ArgvInput.php b/Input/ArgvInput.php
index e1e7ad238..675b9ef58 100644
--- a/Input/ArgvInput.php
+++ b/Input/ArgvInput.php
@@ -141,7 +141,7 @@ private function parseLongOption(string $token)
         $name = substr($token, 2);
 
         if (false !== $pos = strpos($name, '=')) {
-            if (0 === \strlen($value = substr($name, $pos + 1))) {
+            if ('' === $value = substr($name, $pos + 1)) {
                 array_unshift($this->parsed, $value);
             }
             $this->addLongOption(substr($name, 0, $pos), $value);