@@ -581,7 +581,7 @@ class Exercise
$sql = "SELECT q.iid
FROM $TBL_EXERCICE_QUESTION e INNER JOIN $TBL_QUESTIONS q
- ON (e.question_id = q.iid AND e.c_id = ".$this->course_id." )
+ ON (e.question_id = q.id AND e.c_id = ".$this->course_id." )
WHERE e.exercice_id = '".Database::escape_string($this->id)."'
";