diff --git a/knowledge.py b/knowledge.py
index 19b4c06..942978d 100644
--- a/knowledge.py
+++ b/knowledge.py
@@ -135,6 +135,7 @@ class StudentKnowledge(object):
         logger.debug('StudentKnowledge.check_answer()')
 
         q = self.current_question
+        ref = q['ref']
 
         q['answer'] = answer
         q['finish_time'] = datetime.now()
@@ -153,14 +154,14 @@ class StudentKnowledge(object):
             else:
                 self.current_question['start_time'] = datetime.now()
 
-        # if answer is wrong, keep same question and add a similar one at the end
+        # if wrong, keep same question and append a similar one at the end
         else:
             self.wrong_answers += 1
             factory = self.deps.node[self.current_topic]['factory']
             self.questions.append(factory[q['ref']].generate())
 
         # returns answered and corrected question
-        return grade
+        return ref, grade
 
 
     # ========================================================================
diff --git a/learnapp.py b/learnapp.py
index 1a80746..ae16791 100644
--- a/learnapp.py
+++ b/learnapp.py
@@ -106,7 +106,8 @@ class LearnApp(object):
     # ------------------------------------------------------------------------
     def check_answer(self, uid, answer):
         knowledge = self.online[uid]['state']
-        grade = knowledge.check_answer(answer) # also moves to next question
+        ref, grade = knowledge.check_answer(answer) # also moves to next question
+        logger.info(f'User "{uid}" got {grade:.2} in question "{ref}"')
 
         if knowledge.get_current_question() is None:
             # finished topic, save into database
@@ -144,6 +145,7 @@ class LearnApp(object):
                         topic_id=finished_topic)
                     for q in finished_questions])
                 logger.debug(f'Saved {len(finished_questions)} answers into database')
+
         return grade
 
     # ------------------------------------------------------------------------
@@ -159,7 +161,7 @@ class LearnApp(object):
             if ok:
                 logger.info(f'User "{uid}" started "{topic}"')
             else:
-                logger.warning(f'User "{uid}" denied locked "{topic}"')
+                logger.warning(f'User "{uid}" restarted "{topic}"')
             return ok
 
     # ------------------------------------------------------------------------
--
libgit2 0.21.2