diff --git a/paris.php b/paris.php
index 4441ce1a..843fd831 100644
--- a/paris.php
+++ b/paris.php
@@ -427,6 +427,7 @@ public function get($property) {
          */
         public function set($property, $value = null) {
             $this->orm->set($property, $value);
+            return $this;
         }
 
         /**
@@ -436,6 +437,7 @@ public function set($property, $value = null) {
          */
         public function set_expr($property, $value = null) {
             $this->orm->set_expr($property, $value);
+            return $this;
         }
 
         /**