diff --git a/interfaces/CMakeLists.txt b/interfaces/CMakeLists.txt
index f4bb8e2..be8c2e3 100644
--- a/interfaces/CMakeLists.txt
+++ b/interfaces/CMakeLists.txt
@@ -44,6 +44,8 @@ configure_file(xdg-desktop-portal-tde.desktop.cmake
 
 install(FILES tde.portal DESTINATION ${XDG_PREFIX}/share/xdg-desktop-portal/portals)
 
+install(FILES tde-portals.conf DESTINATION ${XDG_PREFIX}/share/xdg-desktop-portal)
+
 install(FILES ${CMAKE_CURRENT_BINARY_DIR}/org.freedesktop.impl.portal.desktop.tde.service
         DESTINATION ${DBUS_SESSION_DIRECTORY})
 
diff --git a/interfaces/tde-portals.conf b/interfaces/tde-portals.conf
new file mode 100644
index 0000000..63c5c52
--- /dev/null
+++ b/interfaces/tde-portals.conf
@@ -0,0 +1,2 @@
+[preferred]
+default=tde;
\ No newline at end of file