diff --git a/src/main/scala/introcourse/level03/package.scala b/src/main/scala/introcourse/level03/package.scala
index c787bcb..7932d93 100644
--- a/src/main/scala/introcourse/level03/package.scala
+++ b/src/main/scala/introcourse/level03/package.scala
@@ -1,11 +1,7 @@
-package introcourse
+package introcourse.level03
 
-package object level03 {
-
-  case class Person(name: String, age: Int)
-
-  enum TrafficLight {
-    case Red, Yellow, Green
-  }
+case class Person(name: String, age: Int)
 
+enum TrafficLight {
+  case Red, Yellow, Green
 }
diff --git a/src/main/scala/introcourse/level04/package.scala b/src/main/scala/introcourse/level04/package.scala
index ce16aef..5c2ab09 100644
--- a/src/main/scala/introcourse/level04/package.scala
+++ b/src/main/scala/introcourse/level04/package.scala
@@ -1,11 +1,7 @@
-package introcourse
+package introcourse.level04
 
-package object level04 {
-
-  case class Person(name: String, age: Int)
-
-  enum TrafficLight {
-    case Red, Yellow, Green
-  }
+case class Person(name: String, age: Int)
 
+enum TrafficLight {
+  case Red, Yellow, Green
 }
diff --git a/src/main/scala/introcourse/level05/package.scala b/src/main/scala/introcourse/level05/package.scala
index 0fcda59..25138d2 100644
--- a/src/main/scala/introcourse/level05/package.scala
+++ b/src/main/scala/introcourse/level05/package.scala
@@ -1,7 +1,3 @@
-package introcourse
+package introcourse.level05
 
-package object level05 {
-
-  case class Person(name: String, age: Int)
-
-}
+case class Person(name: String, age: Int)