diff --git a/boulder-dash/src/fr/enssat/BoulderDash/models/displayableElement/DisplayableElementModel.java b/boulder-dash/src/fr/enssat/BoulderDash/models/displayableElement/DisplayableElementModel.java
index cab5ed65..94be73e6 100644
--- a/boulder-dash/src/fr/enssat/BoulderDash/models/displayableElement/DisplayableElementModel.java
+++ b/boulder-dash/src/fr/enssat/BoulderDash/models/displayableElement/DisplayableElementModel.java
@@ -19,51 +19,19 @@ public abstract class DisplayableElementModel {
 	private final boolean destructible;
 	private final boolean moving;
 
-	private boolean animate;
-	private boolean impactExplosive;
-	private int priority;
-    private boolean falling;
-	private boolean convertible;
-	private String collideSound;
+	private boolean animate = false;
+	private boolean impactExplosive = false;
+	private int priority = 0;
+    private boolean falling = false;
+	private boolean convertible = false;
+	private String collideSound = null;
 
 	private BufferedImage sprite;
 
-	/**
-     * Class constructor
-     *
-	 * @param  destructible     Object destructible?
-	 * @param  moving           Object is moving?
-	 * @param  spriteName       Object sprite name?
-	 * @param  priority         Object priority?
-	 * @param  impactExplosive  Object explodes on impact?
-	 * @param  animate          Object can be animated?
-	 */
-	public DisplayableElementModel(boolean destructible, boolean moving, String spriteName, int priority,
-								   boolean impactExplosive, boolean animate, boolean falling, String collideSound,
-								   boolean convertible) {
-		this.moving = moving;
-		this.destructible = destructible;
-		this.spriteName = spriteName;
-		this.animate = animate;
-		this.impactExplosive = impactExplosive;
-		this.priority = priority;
-		this.falling = falling;
-        this.convertible = convertible;
-		this.collideSound = collideSound;
-	}
-
-    private DisplayableElementModel(boolean destructible, boolean moving, String spriteName,
-								   int priority, boolean impactExplosive, boolean animate,
-								   boolean falling, String collideSound) {
-        this(destructible, moving, spriteName,
-				priority, impactExplosive, animate,
-				falling, collideSound, false);
-    }
-
 	public DisplayableElementModel(final String spriteName, boolean destructible, boolean moving){
-		this(destructible, moving, spriteName,
-				0, false, false,
-				false, null);
+		this.spriteName = spriteName;
+		this.destructible = destructible;
+		this.moving = moving;
 	}
 
 	public DisplayableElementModel(final String spriteName){