diff --git a/UI/WebServerResources/js/Mailer/MailboxController.js b/UI/WebServerResources/js/Mailer/MailboxController.js
index d6a0fb2f9..c953ebab8 100644
--- a/UI/WebServerResources/js/Mailer/MailboxController.js
+++ b/UI/WebServerResources/js/Mailer/MailboxController.js
@@ -172,7 +172,7 @@
                 stateMessage: message
               }
             })
-            .catch() // Cancel
+            .catch(_.noop) // Cancel
             .finally(function() {
               vm.messageDialog = null;
             });
diff --git a/UI/WebServerResources/js/Mailer/MessageController.js b/UI/WebServerResources/js/Mailer/MessageController.js
index deef1f44a..b23830121 100644
--- a/UI/WebServerResources/js/Mailer/MessageController.js
+++ b/UI/WebServerResources/js/Mailer/MessageController.js
@@ -276,6 +276,7 @@
                 stateMessage: message
               }
             })
+            .catch(_.noop) // Cancel
             .finally(function() {
               _messageDialog(null);
               vm.closePopup();