diff --git a/capplet/settings/mail-guess-servers.c b/capplet/settings/mail-guess-servers.c
index f956058262..06ac34351f 100644
--- a/capplet/settings/mail-guess-servers.c
+++ b/capplet/settings/mail-guess-servers.c
@@ -264,7 +264,7 @@ guess_when_online (EmailProvider *provider)
 static char *
 get_filename_for_offline_autoconfig (const char *domain)
 {
-	return NULL; /* FIXME */
+	return g_build_filename (PACKAGE_DATA_DIR, "evolution/mail-autoconfig", domain, NULL);
 }
 
 static gboolean