diff --git a/OGP1718-Worms/src/worms/model/Worm.java b/OGP1718-Worms/src/worms/model/Worm.java
index d8860f8..06f7686 100644
--- a/OGP1718-Worms/src/worms/model/Worm.java
+++ b/OGP1718-Worms/src/worms/model/Worm.java
@@ -372,9 +372,13 @@ public class Worm {
     }
     
     /**
-     * 
+     * substract the current points of the worm
      * 
      * @param angle
+     * 		  the angle needed to calculate the new current points
+     * @post  the current points are set to the old current points minus
+     * 		  the angle (in degrees) divided by 6
+     * 		  |setPoints(this.points - (int) ceil(toDegrees(angle) / 6))
      */
     private void subtractPoints (double angle) {