diff --git a/fluents/navigator.py b/fluents/navigator.py
index e7fb5cc..a754e84 100644
--- a/fluents/navigator.py
+++ b/fluents/navigator.py
@@ -352,8 +352,8 @@ class NavigatorMenu(gtk.Menu):
         datasets = main.project.current_data
         ds_major = datasets[0]
         dims_major = ds_major.get_dim_name()
-        ids_major = ds_major.get_identifiers(dims_major[1])
-        if len(datasets)>1:
+        ids_major = ds_major.get_identifiers(dims_major[1], sorted=True)
+        if len(datasets) > 1:
             # If there is more than one active dataset -> try to use the two first
             ds_minor = datasets[1]
             dims_minor = ds_minor.get_dim_name()