diff --git a/application/assets/deepin-diskmanager.desktop b/application/assets/deepin-diskmanager.desktop
index 06cbf404..c504e9fd 100644
--- a/application/assets/deepin-diskmanager.desktop
+++ b/application/assets/deepin-diskmanager.desktop
@@ -8,5 +8,6 @@ StartupNotify=true
 TryExec=deepin-diskmanager
 Type=Application
 X-Deepin-Vendor=deepin
+X-Deepin-Singleton=true
 
 # Automatically generate translations