diff --git a/src/slic3r/GUI/Plater.cpp b/src/slic3r/GUI/Plater.cpp
index f557ee9427..51a0c85909 100644
--- a/src/slic3r/GUI/Plater.cpp
+++ b/src/slic3r/GUI/Plater.cpp
@@ -15076,7 +15076,8 @@ bool Plater::priv::undo_redo_blocked_by_job()
         return false;
     notification_manager->push_notification(NotificationType::CustomNotification,
                                             NotificationManager::NotificationLevel::RegularNotificationLevel,
-                                            _u8L("Cannot undo or redo while an operation is running. Stop it first."));
+                                            _u8L("Cannot undo or redo while an operation is running. Stop the operation, or wait "
+                                                 "for it to finish and then retry."));
     return true;
 }