diff of f61443ac8905bee527d75b166777d71f6423580f

f61443ac8905bee527d75b166777d71f6423580f
diff --git a/src/routes/settings-routes.lisp b/src/routes/settings-routes.lisp
index 9817c9e..94e3731 100644
--- a/src/routes/settings-routes.lisp
+++ b/src/routes/settings-routes.lisp
@@ -167,4 +167,4 @@
 	  (log:info "Updating ~a to ~d~%" group count)
 	  (upsert-readcount* count user-id group)))
       
-       (stringify groups))))
+       (stringify (or groups #())))))