diff --git a/BUGS.md b/BUGS.md
index 056236e..f0d3569 100644
--- a/BUGS.md
+++ b/BUGS.md
@@ -34,6 +34,7 @@
 
 # FIXED
 
+- não está a guardar o resultado no final do topico
 - esta a permitir 2 logins em simultaneo do mesmo user. fica tudo baralhado se mxerem em simultaneo...
 - errar no ultimo topico nao mostra solucao?
 - quando a pergunta devolve comments, este é apresentado, mas fica persistente nas tentativas seguintes. devia ser limpo apos a segunda submissao.
diff --git a/knowledge.py b/knowledge.py
index d93cefa..0e31804 100644
--- a/knowledge.py
+++ b/knowledge.py
@@ -177,6 +177,9 @@ class StudentKnowledge(object):
     # pure functions of the state (no side effects)
     # ========================================================================
 
+    def topic_has_finished(self):
+        return self.current_question is None
+
     # ------------------------------------------------------------------------
     # compute recommended sequence of topics  ['a', 'b', ...]
     # ------------------------------------------------------------------------
diff --git a/learnapp.py b/learnapp.py
index 2e6ed64..dabca4c 100644
--- a/learnapp.py
+++ b/learnapp.py
@@ -81,7 +81,7 @@ class LearnApp(object):
                 return False
 
         pw_ok = await check_password(try_pw, password)  # async bcrypt
-        
+
         if pw_ok:
             if uid in self.online:
                 logger.warning(f'User "{uid}" already logged in, overwriting')
@@ -153,7 +153,7 @@ class LearnApp(object):
                 topic_id=topic))
             logger.debug(f'Saved "{q["ref"]}" into database')
 
-        if action == 'finished_topic':
+        if knowledge.topic_has_finished():
             # finished topic, save into database
             logger.info(f'User "{uid}" finished "{topic}"')
             level = knowledge.get_topic_level(topic)
--
libgit2 0.21.2