diff --git a/tabellio/documents/common.py b/tabellio/documents/common.py
index 52ed1c7..111def3 100644
--- a/tabellio/documents/common.py
+++ b/tabellio/documents/common.py
@@ -44,6 +44,7 @@ class BasePublication(object):
         # try to get other elements sharing the same topics
         catalog = getToolByName(self, 'portal_catalog')
         previous_result = None
+        r = []
         while len(topics) > len(self.topics)*closeness:
             brains = catalog(portal_type=self.portal_type,
                              topics={'query': topics, 'operator': 'and'})
@@ -52,9 +53,12 @@ class BasePublication(object):
                 random.shuffle(brains)
                 if previous_result:
                     brains = list(previous_result) + brains
-                return brains[:max_items]
+                r = brains[:max_items]
+                break
             elif len(brains) > max_items/2:
-                return brains
+                r = brains
+                break
             previous_result = brains
             del topics[random.randint(0, len(topics)-1)]
-        return []
+        doc_ids = [self.context.id]
+        return [x for x in r if ((type(x.getId) is str) and x.getId or x.getId()) not in doc_ids]