diff --git a/server/extension/sql/0.0.1/10_geocoding.sql b/server/extension/sql/0.0.1/10_geocoding.sql
index 7fdf14b..70644b8 100644
--- a/server/extension/sql/0.0.1/10_geocoding.sql
+++ b/server/extension/sql/0.0.1/10_geocoding.sql
@@ -13,4 +13,4 @@ AS $$
   point = plpy.execute(plan, [coordinates[0], coordinates[1]], 1)[0]
 
   return point['st_setsrid']
-$$ LANGUAGE plpythonu VOLATILE;
+$$ LANGUAGE plpythonu;