diff --git a/re2oapi/client.py b/re2oapi/client.py
index b654331..208a715 100644
--- a/re2oapi/client.py
+++ b/re2oapi/client.py
@@ -577,5 +577,5 @@ class ApiSendMail:
         self.msg.attach(MIMEText(body, mode))
         self.connection.sendmail(email_from, email_to, self.msg.as_string())
 
-     def close(self):
-         self.connection.quit()
+    def close(self):
+        self.connection.quit()