diff --git a/API_SQLuedo/API/Controllers/UsersController.cs b/API_SQLuedo/API/Controllers/UsersController.cs
index 6a4b462..623360e 100644
--- a/API_SQLuedo/API/Controllers/UsersController.cs
+++ b/API_SQLuedo/API/Controllers/UsersController.cs
@@ -74,7 +74,7 @@ namespace API.Controllers
             if(success)
             {
                 _logger.LogInformation("[INFORMATION] L'utilisateur avec l'id {id} a été supprimé.", id);
-                return Ok(_dataService.UserService.DeleteUser(id));
+                return Ok(_dataService.UserService.DeleteItem<UserEntity>(id));
             } else
             {
                 _logger.LogError("[ERREUR] Aucun utilisateur trouvé avec l'id {id}.", id);
diff --git a/API_SQLuedo/ModelToEntity/DbDataManager.cs b/API_SQLuedo/ModelToEntity/DbDataManager.cs
index c56dcf4..c4640e0 100644
--- a/API_SQLuedo/ModelToEntity/DbDataManager.cs
+++ b/API_SQLuedo/ModelToEntity/DbDataManager.cs
@@ -12,7 +12,7 @@ using System.Runtime.InteropServices.ObjectiveC;
 
 namespace ModelToEntity
 {
-    public class DbDataManager : IUserDataService<User?>
+    public class DbDataManager : IUserDataService<User>
     {
         public async Task<User> GetUserById(int id)
         {
diff --git a/API_SQLuedo/ModelToEntity/Extension.cs b/API_SQLuedo/ModelToEntity/Extension.cs
index 508e872..02c8edd 100644
--- a/API_SQLuedo/ModelToEntity/Extension.cs
+++ b/API_SQLuedo/ModelToEntity/Extension.cs
@@ -29,23 +29,23 @@ namespace ModelToEntity
 
             return Task.FromResult<T?>(item);
         }
-        internal static async Task<bool> DeleteItemAsync<T>(this DbContext context, int? id) where T : class
+        internal static Task<bool> DeleteItemAsync<T>(this DbContext context, int? id) where T : class
         {
             if (id == null)
             {
-                return false;
+                return Task.FromResult(false);
             }
 
-            var entity = await context.Set<T>().FindAsync(id);
+            var entity = context.Set<T>().Find(id);
             if (entity == null)
             {
-                return false;
+                return Task.FromResult(false);
             }
 
             context.Set<T>().Remove(entity);
-            await context.SaveChangesAsync();
+            context.SaveChanges();
 
-            return true;
+            return Task.FromResult(true);
         }
         internal static Task<T?> UpdateItemAsync<T, TDto>(this DbContext context, int? id, TDto dto)
         where T : class
diff --git a/API_SQLuedo/Shared/IUserDataService.cs b/API_SQLuedo/Shared/IUserDataService.cs
index bf2f2e2..c6c646f 100644
--- a/API_SQLuedo/Shared/IUserDataService.cs
+++ b/API_SQLuedo/Shared/IUserDataService.cs
@@ -10,7 +10,7 @@ using Model.Business;
 
 namespace Services
 {
-    public interface IUserDataService<T> : IGenericService<T?> where T : class
+    public interface IUserDataService<T> : IGenericService<T> where T : class
     {
         public Task<IEnumerable<T?>> GetUsers(int page, int number);
         public Task<T?> GetUserById(int id);