diff --git a/src/PrintNode/Entity.php b/src/PrintNode/Entity.php
index 8782bea..25337e0 100755
--- a/src/PrintNode/Entity.php
+++ b/src/PrintNode/Entity.php
@@ -21,6 +21,18 @@ public function __construct(Client $parentClient) {
         
     }
     
+    /**
+     * Check if property isset on entity
+     * @param mixed $propertyName
+     * @return boolean
+     */
+    public function __isset($propertyName)
+    {
+        
+        return isset($this->$propertyName);
+        
+    }
+    
     /**
      * Set property on entity
      * @param mixed $propertyName
@@ -132,4 +144,4 @@ public function __toString() {
         
     }
     
-}
\ No newline at end of file
+}