diff --git a/src/Binding/Definition/UnknownDefinition.php b/src/Binding/Definition/UnknownDefinition.php
index 87522547258f4fad569e984d85517b8fef48779f..3ee808e16bf9ce975e009cac36f4d2120b0aa86c 100644
--- a/src/Binding/Definition/UnknownDefinition.php
+++ b/src/Binding/Definition/UnknownDefinition.php
@@ -17,7 +17,7 @@ class UnknownDefinition implements Definition {
 
 	public function __construct(
 		$value,
-		?string $hook = null,
+		?string $hook = null
 	) {
 		$this->value = $value;
 		$this->hook     = $hook;