diff --git a/src/main/java/fr/univ_lille/gitlab/classrooms/assignments/ArchiveRestController.java b/src/main/java/fr/univ_lille/gitlab/classrooms/assignments/ArchiveRestController.java
index 2f83d2c..85c6e2b 100644
--- a/src/main/java/fr/univ_lille/gitlab/classrooms/assignments/ArchiveRestController.java
+++ b/src/main/java/fr/univ_lille/gitlab/classrooms/assignments/ArchiveRestController.java
@@ -12,13 +12,13 @@ import java.util.UUID;
 
 @Controller
 @RolesAllowed("TEACHER")
-public class ArchiveRestController {
+class ArchiveRestController {
 
-    private AssignmentService assignmentService;
+    private final AssignmentService assignmentService;
 
-    private ArchiveAssignmentUseCase archiveAssignmentUseCase;
+    private final ArchiveAssignmentUseCase archiveAssignmentUseCase;
 
-    public ArchiveRestController(AssignmentService assignmentService, ArchiveAssignmentUseCase archiveAssignmentUseCase) {
+    ArchiveRestController(AssignmentService assignmentService, ArchiveAssignmentUseCase archiveAssignmentUseCase) {
         this.assignmentService = assignmentService;
         this.archiveAssignmentUseCase = archiveAssignmentUseCase;
     }
diff --git a/src/main/java/fr/univ_lille/gitlab/classrooms/assignments/ExerciseAssignmentRestController.java b/src/main/java/fr/univ_lille/gitlab/classrooms/assignments/ExerciseAssignmentRestController.java
index 779142a..6dcb1f3 100644
--- a/src/main/java/fr/univ_lille/gitlab/classrooms/assignments/ExerciseAssignmentRestController.java
+++ b/src/main/java/fr/univ_lille/gitlab/classrooms/assignments/ExerciseAssignmentRestController.java
@@ -14,13 +14,13 @@ import java.util.stream.Collectors;
 
 @Controller
 @RolesAllowed("TEACHER")
-public class ExerciseAssignmentRestController {
+class ExerciseAssignmentRestController {
 
-    private AssignmentService assignmentService;
+    private final AssignmentService assignmentService;
 
-    private GitLabApi gitlab;
+    private final GitLabApi gitlab;
 
-    public ExerciseAssignmentRestController(AssignmentService assignmentService, GitLabApi gitlab) {
+    ExerciseAssignmentRestController(AssignmentService assignmentService, GitLabApi gitlab) {
         this.assignmentService = assignmentService;
         this.gitlab = gitlab;
     }