diff --git a/layers/place/capital.sql b/layers/place/capital.sql
index 33756478..11221094 100644
--- a/layers/place/capital.sql
+++ b/layers/place/capital.sql
@@ -2,8 +2,8 @@ CREATE OR REPLACE FUNCTION normalize_capital_level(capital text)
     RETURNS int AS
 $$
 SELECT CASE
-           WHEN capital IN ('yes', '2') THEN 2
-           WHEN capital = '4' THEN 4
+           WHEN capital = 'yes' THEN 2
+           WHEN capital IN ('2', '3', '4', '5', '6') THEN capital::int
            END;
 $$ LANGUAGE SQL IMMUTABLE
                 STRICT