diff --git a/application/assets/deepin-log-viewer.desktop b/application/assets/deepin-log-viewer.desktop
index 0b3a9b9c..3a69d909 100644
--- a/application/assets/deepin-log-viewer.desktop
+++ b/application/assets/deepin-log-viewer.desktop
@@ -8,6 +8,7 @@ StartupNotify=false
 TryExec=deepin-log-viewer
 Type=Application
 X-Deepin-Vendor=deepin
+X-Deepin-Singleton=true
 
 # Translations:
 # Do not manually modify!