diff --git a/src/org.kde.partitionmanager.desktop b/src/org.kde.partitionmanager.desktop
index b298f22d..b9be064d 100644
--- a/src/org.kde.partitionmanager.desktop
+++ b/src/org.kde.partitionmanager.desktop
@@ -167,6 +167,7 @@ Comment[zh_TW]=管理磁碟、分割區與檔案系統
 Exec=partitionmanager
 Icon=partitionmanager
 Categories=System;Filesystem;KDE;Qt;
+SingleMainWindow=True
 X-KDE-StartupNotify=true
 Keywords=partition;disk;
 Keywords[ar]=أقسام;قرص;