diff --git a/databaseOperations.php b/databaseOperations.php
index f0b391c..3f2989a 100755
--- a/databaseOperations.php
+++ b/databaseOperations.php
@@ -204,11 +204,11 @@ function getEventsByDateAndCategories($db, $date, $categories)
                 $usableCategories[] = $cat;
         }
 
-        $request = $db->prepare('SELECT DISTINCT event_id, event_title FROM event NATURAL JOIN eventCategorie WHERE (event_dtstart <= :date_max AND event_dtend >= :date_min) AND cat_id IN (:categories)');
+        $catStr = implode(',', array_map('intval', $usableCategories));
+        $request = $db->prepare('SELECT DISTINCT event_id, event_title FROM event NATURAL JOIN eventCategorie WHERE (event_dtstart <= :date_max AND event_dtend >= :date_min) AND cat_id IN ('.$catStr.')');
         $request->execute(array(
             'date_max'=>date("Y-m-d 23:59:59",$date),
             'date_min'=>date("Y-m-d 00:00:00", $date),
-            'categories'=>implode(',', array_map('intval', $usableCategories))
         ));
         $result = $request->fetchAll();
         $request->closeCursor();
diff --git a/populateDatabase.sql b/populateDatabase.sql
index 0b186ab..bddb7ca 100644
--- a/populateDatabase.sql
+++ b/populateDatabase.sql
@@ -37,7 +37,7 @@ INSERT INTO eventCategorie(event_id, cat_id) VALUES(2, 2);
 INSERT INTO eventCategorie(event_id, cat_id) VALUES(2, 3);
 INSERT INTO eventCategorie(event_id, cat_id) VALUES(2, 4);
 INSERT INTO eventCategorie(event_id, cat_id) VALUES(2, 5);
-INSERT INTO eventCategorie(event_id, cat_id) VALUES(3, 14);
+INSERT INTO eventCategorie(event_id, cat_id) VALUES(3, 13);
 INSERT INTO eventCategorie(event_id, cat_id) VALUES(4, 6);
 INSERT INTO eventCategorie(event_id, cat_id) VALUES(5, 14);
 INSERT INTO eventCategorie(event_id, cat_id) VALUES(6, 14);