diff --git a/src/deepin-camera.desktop b/src/deepin-camera.desktop
index 52540910..42852547 100644
--- a/src/deepin-camera.desktop
+++ b/src/deepin-camera.desktop
@@ -10,6 +10,7 @@ Terminal=false
 Type=Application
 X-Deepin-TurboType=dtkwidget
 X-Deepin-Vendor=deepin
+X-Deepin-Singleton=true
 X-MultipleArgs=false
 
 # Translations: