diff --git a/src/Worm.java b/src/Worm.java
index a975a1b..8866c84 100644
--- a/src/Worm.java
+++ b/src/Worm.java
@@ -94,7 +94,13 @@ public class Worm {
         return this.orientation;
     }
 
+
+    /**
+     * @param   orientation
+     *          
+     */
     public void setOrientation(double orientation) {
+
         this.orientation = orientation;
     }
 
@@ -150,7 +156,7 @@ public class Worm {
     
     /**
      * 
-     * @param NumberSteps
+     * @param NumberSteps ...
      * 
      * @post ...
      * 		|new.CoordX = CoordX + NumberSteps * distanceX
@@ -165,9 +171,9 @@ public class Worm {
     public void move(int NumberSteps) {
     	if (NumberSteps < 0)
     		throw new IllegalArgumentException();
-    	double distanceX = getRadius() * Math.cos(getOrientation());
-    	double distanceY = getRadius() * Math.sin(getOrientation());
-    	setCoordX(getCoordX() + NumberSteps * distanceX);
-    	setCoordY(getCoordY() + NumberSteps * distanceY);
+    	double distanceX = this.radius * Math.cos(this.orientation);
+    	double distanceY = this.radius * Math.sin(this.orientation);
+    	setCoordX(this.coordX + NumberSteps * distanceX);
+    	setCoordY(this.coordY + NumberSteps * distanceY);
     }
 }