Index: openacs-4/packages/news-aggregator/tcl/aggregator-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/news-aggregator/tcl/aggregator-procs.tcl,v
diff -u -N -r1.13 -r1.14
--- openacs-4/packages/news-aggregator/tcl/aggregator-procs.tcl	18 Jul 2018 16:36:38 -0000	1.13
+++ openacs-4/packages/news-aggregator/tcl/aggregator-procs.tcl	18 Jul 2018 16:41:49 -0000	1.14
@@ -317,7 +317,7 @@
     @creation-date 2003-06-29
 } {
     set aggregator_id [db_string find_default {
-        select default_aggregator
+        select coalesce(default_aggregator, 0)
         from na_user_preferences
         where user_id = :user_id
     } -default 0]