diff --git a/src/pfwbged/basecontent/indexers.py b/src/pfwbged/basecontent/indexers.py
index 2eb326d..34a443d 100644
--- a/src/pfwbged/basecontent/indexers.py
+++ b/src/pfwbged/basecontent/indexers.py
@@ -55,7 +55,7 @@ def document_dynamic_searchable_text_indexer(obj):
             except LookupError:
                 continue
 
-    return u' '.join([x for x in indexed_elements])
+    return u' '.join([x for x in indexed_elements if x])
 
 grok.global_adapter(document_dynamic_searchable_text_indexer,
                     name='SearchableText')