diff --git a/src/cmsplugin_blurp/renderers/data_source_list.py b/src/cmsplugin_blurp/renderers/data_source_list.py
index 1be4972..a59b24a 100644
--- a/src/cmsplugin_blurp/renderers/data_source_list.py
+++ b/src/cmsplugin_blurp/renderers/data_source_list.py
@@ -13,7 +13,7 @@ class Renderer(data_source.Renderer):
         context[self.slug] = []
         for slug, data in self.get_sources(context):
             try:
-                context[self.slug].append(data.content)
+                context[self.slug].extend(data.content)
             except Exception as e:
                 log.exception("exception occured while extending the list: %s", e)
         return super(Renderer, self).render(context)