diff --git a/src/org/hwo/Smoother.java b/src/org/hwo/Smoother.java
index f33f52c..91832c3 100644
--- a/src/org/hwo/Smoother.java
+++ b/src/org/hwo/Smoother.java
@@ -34,6 +34,7 @@ public class Smoother {
 	}
 
 	public void setWert(int wert) {
+		this.setSumme( (wert * tn) - wert );
 		this.wert = wert;
 	}