diff --git a/src/Model/CampaignAffiliatePolicyStatus.php b/src/Model/CampaignAffiliatePolicyStatus.php
index 433778b..a0c0255 100644
--- a/src/Model/CampaignAffiliatePolicyStatus.php
+++ b/src/Model/CampaignAffiliatePolicyStatus.php
@@ -38,4 +38,12 @@ public function setStatus($status)
     {
         $this->status = $status;
     }
+
+    /**
+     * @return string
+     */
+    public function __toString()
+    {
+        return $this->status;
+    }
 }
diff --git a/src/Model/CampaignAssignmentStatus.php b/src/Model/CampaignAssignmentStatus.php
index 895af02..a3d1bdc 100644
--- a/src/Model/CampaignAssignmentStatus.php
+++ b/src/Model/CampaignAssignmentStatus.php
@@ -41,4 +41,12 @@ public function setStatus($status)
     {
         $this->status = $status;
     }
+
+    /**
+     * @return string
+     */
+    public function __toString()
+    {
+        return $this->status;
+    }
 }