diff --git a/gb.dbus/src/gb.dbus/.src/DBusConnection.class b/gb.dbus/src/gb.dbus/.src/DBusConnection.class
index ae42af036..a0fcb67d8 100644
--- a/gb.dbus/src/gb.dbus/.src/DBusConnection.class
+++ b/gb.dbus/src/gb.dbus/.src/DBusConnection.class
@@ -62,6 +62,19 @@ End
 
 Public Sub Exist((Application) As String) As Boolean
   
-  Try Return DBus["org.freedesktop.DBus"]["/", "org.freedesktop.DBus"].NameHasOwner(Application)
+  Try Return Me["org.freedesktop.DBus"]["/", "org.freedesktop.DBus"].NameHasOwner(Application)
+  
+End
+
+Public Sub Start((Application) As String)
+  
+  Dim fTime As Float
+  
+  Me["org.freedesktop.DBus"]["/", "org.freedesktop.DBus"].StartServiceByName(Application, 0)
+  fTime = Timer
+  While Not {Exist}(Application)
+    Sleep 0.05
+    If (Timer - fTime) > 1 Then Error.Raise("Cannot start service")
+  Wend
   
 End
diff --git a/gb.dbus/src/gb.dbus/.src/MMain.module b/gb.dbus/src/gb.dbus/.src/MMain.module
index da69c9ccc..489de51e0 100644
--- a/gb.dbus/src/gb.dbus/.src/MMain.module
+++ b/gb.dbus/src/gb.dbus/.src/MMain.module
@@ -177,6 +177,8 @@ Public Sub Main()
   Dim hFile As File 
   hFile = Open "~/03.FDR_OAPP_2023_12.05_bois_harpe et piano.pdf"
   
+  Print DBus.Session.Exist("org.freedesktop.portal.Desktop")
+  
   Print DBus["org.freedesktop.portal.Desktop"]["/org/freedesktop/portal/desktop", "org.freedesktop.portal.OpenURI"].OpenFile("", DBusFile(hFile), ["handle_token": "Gambas1972", "interactive": True])
   
 End