diff --git a/src/platform/qt/AbstractUpdater.cpp b/src/platform/qt/AbstractUpdater.cpp
index c165ae1a0..02f23c956 100644
--- a/src/platform/qt/AbstractUpdater.cpp
+++ b/src/platform/qt/AbstractUpdater.cpp
@@ -85,5 +85,7 @@ void AbstractUpdater::updateDownloaded(QNetworkReply* reply) {
 		}
 		f.write(bytes);
 	}
+	f.flush();
+	f.close();
 	emit updateDone(true);
 }