diff --git a/src/activities/explore_farm_animals/explore-level.js b/src/activities/explore_farm_animals/explore-level.js
index 6241757e8..36c79db8c 100644
--- a/src/activities/explore_farm_animals/explore-level.js
+++ b/src/activities/explore_farm_animals/explore-level.js
@@ -1,136 +1,141 @@
 /* GCompris - explore-level.js
 *
 * Copyright (C) 2015 Ayush Agrawal <ayushagrawal288@gmail.com>
 *
 * Authors:
 *   Beth Hadley <bethmhadley@gmail.com> (GTK+ version)
 *   Ayush Agrawal <ayushagrawal288@gmail.com> (Qt Quick port)
 *   Djalil MESLI <djalilmesli@gmail.com> (Qt Quick port)
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 3 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program; if not, see <http://www.gnu.org/licenses/>.
 */
 
 .pragma library
 .import GCompris 1.0 as GCompris
 .import "qrc:/gcompris/src/core/core.js" as Core
 
 var numberOfLevels
 var items
 var url
 var currentLevel
 
 function start(items_,url_,levelCount_) {
     items = items_
     url = url_
     numberOfLevels = levelCount_
     currentLevel = 1
     items.score.currentSubLevel = 1
 
     initLevel()
 }
 
 function stop() {
     items.audioVoices.stop()
 }
 
 function initLevel() {
     items.bar.level = currentLevel
     var filename = url + "board" + "/" + "board" + currentLevel + ".qml"
     items.dataset.source = filename
     items.progressbar.value = 0
     items.progressbar.maximumValue = items.dataModel.count
     items.score.numberOfSubLevels = items.hasAudioQuestions ? 3 : 2;
     // randomize the questions for level 2 and 3
     Core.shuffle(items.questionOrder);
     // Change the currentSubLevel value to 1 to be sure to update the question value
     // else if you are sublevel 0 and go to last level, the question is not the good one
     items.progressbar.value = 1
     items.progressbar.value = 0
     items.descriptionPanel.visible = false
-    // Stop audio if necessary (switch from level 2 at beginning to a new level for example)
-    items.audioVoices.stop()
     items.instruction.visible = true
 
     reload();
 }
 
 function nextLevel() {
     ++items.score.currentSubLevel
     if(numberOfLevels <= currentLevel && items.score.numberOfSubLevels < items.score.currentSubLevel)
     {
         currentLevel = 0
     }
     if (items.score.numberOfSubLevels < items.score.currentSubLevel) {
         currentLevel++
         items.score.currentSubLevel = 1
     }
     initLevel();
+
+    // Stop audio if necessary (switch from level 2 at beginning to a new level for example)
+    items.audioVoices.stop()
+
     if (items.score.currentSubLevel == 2) {
         items.progressbar.value = 0;
         initSubSubLevel();
     }
 }
 
 function previousLevel() {
     --items.score.currentSubLevel
     if(currentLevel <= 1 && items.score.currentSubLevel < 1)
     {
         currentLevel = numberOfLevels
         items.score.currentSubLevel = items.score.numberOfSubLevels
     }
     else if(items.score.currentSubLevel < 1) {
         currentLevel--
         items.score.currentSubLevel = items.score.numberOfSubLevels
     }
     initLevel();
 
+    // Stop audio if necessary (switch from level 2 at beginning to a new level for example)
+    items.audioVoices.stop()
+
     if(items.score.currentSubLevel == 2 && items.hasAudioQuestions) {
         items.audioVoices.play(getCurrentQuestion().audio);
     }
 }
 
 function isComplete() {
     for(var i = 0 ; i < items.dataModel.count ; ++ i) {
         if(!items.dataModel.itemAt(i).starVisible)
             return false;
     }
     return true;
 }
 
 function initSubSubLevel() {
     if(items.progressbar.value == items.dataModel.count) {
         items.bonus.good("smiley");
     }
-     if(items.score.currentSubLevel == 2 && items.hasAudioQuestions) {
+     if(items.score.currentSubLevel == 2 && items.hasAudioQuestions && getCurrentQuestion()) {
         items.audioVoices.play(getCurrentQuestion().audio);
     }
 }
 
 function nextSubSubLevel() {
     initSubSubLevel()
 }
 
 function reload() {
     for(var i = 0 ; i < items.dataModel.count ; ++ i) {
         items.dataModel.itemAt(i).starVisible = false;
     }
 }
 
 function repeat() {
     items.audioVoices.play(getCurrentQuestion().audio);
 }
 
 function getCurrentQuestion() {
     return items.dataset.item.tab[items.questionOrder[items.progressbar.value]];
 }