diff --git a/src/main/java/ch/heigvd/res/chill/domain/wasadigi/Boxer.java b/src/main/java/ch/heigvd/res/chill/domain/wasadigi/Boxer.java
index 20db7de1..8fa9a5e8 100644
--- a/src/main/java/ch/heigvd/res/chill/domain/wasadigi/Boxer.java
+++ b/src/main/java/ch/heigvd/res/chill/domain/wasadigi/Boxer.java
@@ -4,7 +4,7 @@
 
 import java.math.BigDecimal;
 
-public class Boxer implements IProduct {
+public class Boxer implements IProduct2 {
 
   public final static String NAME = "Boxer";
   public final static BigDecimal PRICE = new BigDecimal(2.0);
diff --git a/src/main/java/ch/heigvd/res/chill/domain/wasadigi/a.txt b/src/main/java/ch/heigvd/res/chill/domain/wasadigi/a.txt
new file mode 100644
index 00000000..78981922
--- /dev/null
+++ b/src/main/java/ch/heigvd/res/chill/domain/wasadigi/a.txt
@@ -0,0 +1 @@
+a
diff --git a/src/main/java/ch/heigvd/res/chill/domain/wasadigi/b.txt b/src/main/java/ch/heigvd/res/chill/domain/wasadigi/b.txt
new file mode 100644
index 00000000..61780798
--- /dev/null
+++ b/src/main/java/ch/heigvd/res/chill/domain/wasadigi/b.txt
@@ -0,0 +1 @@
+b