diff --git a/app/services/carto/redis_export_service.rb b/app/services/carto/redis_export_service.rb
index ab0275946a..bd510fd97d 100644
--- a/app/services/carto/redis_export_service.rb
+++ b/app/services/carto/redis_export_service.rb
@@ -119,7 +119,7 @@ module Carto
       named_maps_key = "map_tpl|#{user.username}"
       named_maps_keys = $tables_metadata_secondary.hkeys(named_maps_key).reject do |named_map|
         match = re.match(named_map)
-        match && visualization_exists?(id: match[:viz_id].gsub(/_/, '-'), user_id: user.id)
+        match && visualization_exists?(id: match[:viz_id].tr('_', '-'), user_id: user.id)
       end
       named_maps_hash = named_maps_keys.reduce({}) do |m, named_map|
         m.merge(named_map => Base64.encode64($tables_metadata_secondary.hget(named_maps_key, named_map)))