diff --git a/src/core/models/CoreConfigModel.php b/src/core/models/CoreConfigModel.php
index e68864e8088c6d07e891b71b8d2406429937c156..d78cb783fd26b820f7aa98106a151ac9694025fd 100755
--- a/src/core/models/CoreConfigModel.php
+++ b/src/core/models/CoreConfigModel.php
@@ -232,7 +232,7 @@ class CoreConfigModel
 
             $mailevaConfig['enabled']       = $configuration['enabled'];
             $mailevaConfig['connectionUri'] = $configuration['authUri'];
-            $mailevaConfig['uri']           = $configuration['uri'];
+            $mailevaConfig['uri']           = rtrim($configuration['uri'], '/');
 
             if (!empty($mailevaConfig['uri']) && $mailevaConfig['uri'] == 'https://api.maileva.com') {
                 $mailevaConfig['clientId'] = '69d315c2b3694accbce85f2871add37d';