diff --git a/cockatrice/src/window_main.cpp b/cockatrice/src/window_main.cpp
index 4cccf1d0..f3d20e19 100644
--- a/cockatrice/src/window_main.cpp
+++ b/cockatrice/src/window_main.cpp
@@ -258,7 +258,7 @@ void MainWindow::loginError(Response::ResponseCode r, QString reasonStr, quint32
 			QMessageBox::critical(this, tr("Error"), bannedStr);
 			break;
 		}
-		case Response::RespUserIsBanned:
+		case Response::RespUsernameInvalid:
 			QMessageBox::critical(this, tr("Error"), tr("Invalid username."));
 			break;
 		default: