diff --git a/src/Types/Update.php b/src/Types/Update.php
index 5ad03a9c..0294b71e 100644
--- a/src/Types/Update.php
+++ b/src/Types/Update.php
@@ -196,7 +196,7 @@ class Update extends BaseType implements TypeInterface
      *
      * @var ChatBoostRemoved|null
      */
-    protected $removedChatBoost;
+    protected $chatBoostRemoved;
 
     /**
      * @return int
@@ -529,15 +529,15 @@ public function setChatBoost($chatBoost)
      */
     public function getChatBoostRemoved()
     {
-        return $this->removedChatBoost;
+        return $this->chatBoostRemoved;
     }
 
     /**
-     * @param ChatBoostRemoved|null $removedChatBoost
+     * @param ChatBoostRemoved|null $chatBoostRemoved
      * @return void
      */
-    public function setChatBoostRemoved($removedChatBoost)
+    public function setChatBoostRemoved($chatBoostRemoved)
     {
-        $this->removedChatBoost = $removedChatBoost;
+        $this->chatBoostRemoved = $chatBoostRemoved;
     }
 }
diff --git a/tests/AbstractTypeTest.php b/tests/AbstractTypeTest.php
index de0a4926..ce9b0253 100644
--- a/tests/AbstractTypeTest.php
+++ b/tests/AbstractTypeTest.php
@@ -58,6 +58,10 @@ public function testFromResponseFull()
 
         $this->assertInstanceOf(static::getType(), $item);
         $this->assertFullItem($item);
+
+        $innerJson = $item->toJson();
+
+        $this->assertIsString($innerJson);
     }
 
     /**