diff --git a/gui/__main__.py b/gui/__main__.py
index 4f71c4e..d0f6abe 100755
--- a/gui/__main__.py
+++ b/gui/__main__.py
@@ -1625,6 +1625,7 @@ class Worker(QObject):
             pass
 
         for source in sources:
+            add(getattr(source, 'id', None)) # sending the location id (a number)
             add(getattr(source, 'country_name', None))
             add(getattr(source, 'name', None))
             add(getattr(source, 'code', None))