diff --git a/src/Protocol/CompletionContext.php b/src/Protocol/CompletionContext.php
index ff18bd1..f538867 100644
--- a/src/Protocol/CompletionContext.php
+++ b/src/Protocol/CompletionContext.php
@@ -22,7 +22,7 @@ class CompletionContext
      */
     public $triggerCharacter;
 
-    public function __construct(int $triggerKind, string $triggerCharacter = null)
+    public function __construct(int $triggerKind = null, string $triggerCharacter = null)
     {
         $this->triggerKind = $triggerKind;
         $this->triggerCharacter = $triggerCharacter;