diff --git a/app/ui/service_details_dialog.glade b/app/ui/service_details_dialog.glade
index c8fbe872..2e09c003 100644
--- a/app/ui/service_details_dialog.glade
+++ b/app/ui/service_details_dialog.glade
@@ -301,6 +301,7 @@ Author: Dmitriy Yefremov
         <property name="label" translatable="yes">Add</property>
         <property name="can_focus">True</property>
         <property name="receives_default">True</property>
+        <property name="tooltip_text" translatable="yes">Create a new service</property>
         <property name="valign">center</property>
         <signal name="clicked" handler="on_save" swapped="no"/>
         <accelerator key="Return" signal="activate"/>