diff --git a/libraries-testing/src/main/java/com/baeldung/archunit/smurfs/persistence/SmurfsRepository.java b/libraries-testing/src/main/java/com/baeldung/archunit/smurfs/persistence/SmurfsRepository.java
index 5d90d0f288..171f2f17db 100644
--- a/libraries-testing/src/main/java/com/baeldung/archunit/smurfs/persistence/SmurfsRepository.java
+++ b/libraries-testing/src/main/java/com/baeldung/archunit/smurfs/persistence/SmurfsRepository.java
@@ -24,7 +24,6 @@ public class SmurfsRepository {
         smurfs.put("Architect", new Smurf("Architect", true, true));
         smurfs.put("Baby", new Smurf("Baby", true, true));
         smurfs.put("Baker", new Smurf("Baker", true, true));
-        smurfs.put("Baker", new Smurf("Baker", true, true));
     }
 
     public List<Smurf> findAll() {
diff --git a/libraries-testing/src/main/java/com/baeldung/archunit/smurfs/persistence/domain/Smurf.java b/libraries-testing/src/main/java/com/baeldung/archunit/smurfs/persistence/domain/Smurf.java
index 255a024cdc..938257ba17 100644
--- a/libraries-testing/src/main/java/com/baeldung/archunit/smurfs/persistence/domain/Smurf.java
+++ b/libraries-testing/src/main/java/com/baeldung/archunit/smurfs/persistence/domain/Smurf.java
@@ -5,8 +5,6 @@ public class Smurf {
     private boolean comic;
     private boolean cartoon;
 
-    public Smurf() {}
-
     public Smurf(String name, boolean comic, boolean cartoon) {
         this.name = name;
         this.comic = comic;