diff --git a/src/Model/Filter/Store/ProductFilterType.php b/src/Model/Filter/Store/ProductFilterType.php
index 4088921..6a1fcd8 100644
--- a/src/Model/Filter/Store/ProductFilterType.php
+++ b/src/Model/Filter/Store/ProductFilterType.php
@@ -165,9 +165,9 @@ class ProductFilterType
     public $offerIds;
 
     /**
-     * @var array
+     * @var string[]
      *
-     * @Form\Type("array")
+     * @Form\Type("string[]")
      * @Form\SerializedName("properties")
      */
     public $properties;