diff --git a/src/config_generator/map_viewer_config.py b/src/config_generator/map_viewer_config.py
index 4549353..52075ad 100644
--- a/src/config_generator/map_viewer_config.py
+++ b/src/config_generator/map_viewer_config.py
@@ -495,6 +495,7 @@ def theme_item(self, cfg_item, themes_config, assets_dir, autogenExternalLayers,
 
         self.set_optional_config(cfg_item, 'watermark', item)
         self.set_optional_config(cfg_item, 'config', item)
+        self.set_optional_config(cfg_item, 'flags', item)
         self.set_optional_config(cfg_item, 'mapTips', item)
         self.set_optional_config(cfg_item, 'userMap', item)
         self.set_optional_config(cfg_item, 'pluginData', item)