diff --git a/src/Transaction/TransactionBuilder.php b/src/Transaction/TransactionBuilder.php
index 66cb163..aa94181 100755
--- a/src/Transaction/TransactionBuilder.php
+++ b/src/Transaction/TransactionBuilder.php
@@ -602,5 +602,7 @@ public function getMemo()
     public function setMemo($memo)
     {
         $this->memo = $memo;
+
+        return $this;
     }
 }
\ No newline at end of file