diff --git a/sources/src/main/java/pr2/algorithmen/rnd/StandardRandomGenerator.java b/sources/src/main/java/pr2/algorithmen/rnd/StandardRandomGenerator.java
index c3a3fbf..dca0cee 100644
--- a/sources/src/main/java/pr2/algorithmen/rnd/StandardRandomGenerator.java
+++ b/sources/src/main/java/pr2/algorithmen/rnd/StandardRandomGenerator.java
@@ -2,7 +2,7 @@ package pr2.algorithmen.rnd;
 
 import java.util.Random;
 
-public class StandardRandomGenerator {
+public class StandardRandomGenerator implements RandomGenerator {
 
     private final Random rnd = new Random();