diff --git a/sql/functions.sql b/sql/functions.sql
index de850718..3029d015 100644
--- a/sql/functions.sql
+++ b/sql/functions.sql
@@ -985,7 +985,7 @@ BEGIN
       ELSEIF NEW.type in ('suburb','croft','subdivision') THEN
         NEW.rank_search := 20;
         NEW.rank_address := NEW.rank_search;
-      ELSEIF NEW.type in ('farm','locality','islet') THEN
+      ELSEIF NEW.type in ('farm','locality','islet','isolated_dwelling') THEN
         NEW.rank_search := 20;
         NEW.rank_address := 0;
       ELSEIF NEW.type in ('hall_of_residence','neighbourhood','housing_estate','nature_reserve') THEN