diff --git a/src/activities/chronos/resource/board/board1_0.qml b/src/activities/chronos/resource/board/board1_0.qml
index 3cf01172a..0a686e9d5 100644
--- a/src/activities/chronos/resource/board/board1_0.qml
+++ b/src/activities/chronos/resource/board/board1_0.qml
@@ -1,84 +1,80 @@
 /* GCompris
  *
  * Copyright (C) 2015 Bruno Coudoin <bruno.coudoin@gcompris.net>
  *
  * Authors:
  *   Bruno Coudoin <bruno.coudoin@gcompris.net> (GTK+ version)
  *   Pulkit Gupta <pulkitgenius@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 <https://www.gnu.org/licenses/>.
  */
 import QtQuick 2.6
 
 QtObject {
    property string instruction: qsTr("Moonwalker")
    property var levels: [
-      {
-          "pixmapfile": "images/bg.jpg",
-          "type": "SHAPE_BACKGROUND_IMAGE"
-      },
       {
           "pixmapfile": "images/4.png",
           "x": "0.7",
           "y": "0.7",
           "soundFile": "sound/2.$CA"
       },
       {
           "pixmapfile": "images/3.png",
           "x": "0.3",
           "y": "0.7",
           "soundFile": "sound/3.$CA"
       },
       {
           "pixmapfile": "images/2.png",
           "x": "0.7",
           "y": "0.25",
           "soundFile": "sound/2.$CA"
       },
       {
           "pixmapfile": "images/1.png",
           "x": "0.3",
           "y": "0.25",
           "soundFile": "sound/1.$CA"
       },
       {
 		  "text": qsTr("1"),
 		  "x": "0.3",
 		  "y": 0.25,
 		  "width": "0.2",
 		  "type": "DisplayText"
       },
       {
 		  "text": qsTr("2"),
 		  "x": "0.7",
 		  "y": 0.25,
 		  "width": "0.2",
 		  "type": "DisplayText"
       },
       {
 		  "text": qsTr("3"),
 		  "x": "0.3",
 		  "y": 0.7,
 		  "width": "0.2",
 		  "type": "DisplayText"
       },
       {
 		  "text": qsTr("4"),
 		  "x": "0.7",
 		  "y": 0.7,
 		  "width": "0.2",
 		  "type": "DisplayText"
       }
    ]
 }
diff --git a/src/activities/chronos/resource/images/README b/src/activities/chronos/resource/images/README
index 37ef0031b..13696a04e 100644
--- a/src/activities/chronos/resource/images/README
+++ b/src/activities/chronos/resource/images/README
@@ -1,36 +1,35 @@
 Copyright: Franck Doucet
 License: GPLv3
 Files:
 1.png
 2.png
 3.png
 4.png
 1955ds19.svg
 autumn.svg
 bell_X1.svg
 benz1885.svg
-bg.jpg
 bleriot.svg
 bolle1878.svg
 celerifere.svg
 chronos-tuxtree1.svg
 chronos-tuxtree2.svg
 chronos-tuxtree3.svg
 chronos-tuxtree4.svg
 Eole.svg
 fardier.svg
 garden1.svg
 garden2.svg
 garden3.svg
 garden4.svg
 helico_cornu.svg
 lancia1923.svg
 lindbergh.svg
 mongolfiere.svg
 rafale.svg
 renault1899.svg
 spring.svg
 st_rocket.svg
 summer.svg
 winter.svg
 wright_flyer.svg
diff --git a/src/activities/chronos/resource/images/bg.jpg b/src/activities/chronos/resource/images/bg.jpg
deleted file mode 100644
index ece452a22..000000000
Binary files a/src/activities/chronos/resource/images/bg.jpg and /dev/null differ