diff --git a/app/Models/Project.php b/app/Models/Project.php
index 6735e9c..ae75af0 100644
--- a/app/Models/Project.php
+++ b/app/Models/Project.php
@@ -8,6 +8,7 @@ use App\Models\MacroSchedule\Activity;
 use App\Models\MacroSchedule\Marker;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Model;
+use Illuminate\Support\Str;
 use Kwaadpepper\CrudPolicies\Enums\CrudAction;
 use Kwaadpepper\CrudPolicies\Enums\CrudType;
 use Kwaadpepper\CrudPolicies\Traits\IsCrudModel;
@@ -129,12 +130,10 @@ class Project extends Model
                     CrudAction::update(),
                 ]
             ],
-            'sites' => [
-                'label' => trans('Sites'),
-                'type' => CrudType::belongsToMany(),
-                'belongsToMany' => Site::class,
-                'belongsToManyLabel' => 'name',
-                'nullable' => true,
+            'site_id' => [
+                'label' => Str::singular(trans('models.classes.sites')),
+                'type' => CrudType::belongsTo(),
+                'belongsTo' => Site::class,
                 'readonly' => function () {
                     /** @var \App\Models\User */
                     $user = auth()->user();
@@ -176,13 +175,13 @@ class Project extends Model
     // * RELATIONSHIPS.
 
     /**
-     * BelongsToMany Site
+     * BelongsTo Site
      *
-     * @return \Illuminate\Database\Eloquent\Relations\BelongsToMany
+     * @return \Illuminate\Database\Eloquent\Relations\BelongsTo
      */
-    public function sites()
+    public function site()
     {
-        return $this->belongsToMany(Site::class, 'project_site');
+        return $this->belongsTo(Site::class);
     }
 
     /**
diff --git a/app/Models/ProjetSite.php b/app/Models/ProjetSite.php
deleted file mode 100644
index e51ff3a..0000000
--- a/app/Models/ProjetSite.php
+++ /dev/null
@@ -1,9 +0,0 @@
-<?php
-
-namespace App\Models;
-
-use Illuminate\Database\Eloquent\Relations\Pivot;
-
-class ProjetSite extends Pivot
-{
-}
diff --git a/app/Models/Site.php b/app/Models/Site.php
index fc8e565..577b2cb 100644
--- a/app/Models/Site.php
+++ b/app/Models/Site.php
@@ -144,24 +144,6 @@ class Site extends Model
                     CrudAction::create(),
                     CrudAction::update(),
                 ]
-            ],
-            'projects' => [
-                'label' => trans('models.classes.projects'),
-                'type' => CrudType::belongsToMany(),
-                'belongsToMany' => Project::class,
-                'belongsToManyLabel' => 'name',
-                'nullable' => true,
-                'readonly' => function () {
-                    /** @var \App\Models\User */
-                    $user = auth()->user();
-                    return !$user->isAdmin();
-                },
-                'actions' => [
-                    CrudAction::viewAny(),
-                    CrudAction::view(),
-                    CrudAction::create(),
-                    CrudAction::update()
-                ]
             ]
         ];
         parent::__construct($attributes);
@@ -213,13 +195,13 @@ class Site extends Model
     }
 
     /**
-     * BelongsToMany Project relation
+     * BelongsTo Project relation
      *
-     * @return \Illuminate\Database\Eloquent\Relations\BelongsToMany
+     * @return \Illuminate\Database\Eloquent\Relations\BelongsTo
      */
-    public function projects()
+    public function project()
     {
-        return $this->belongsToMany(Project::class);
+        return $this->belongsTo(Project::class);
     }
 
     /**
diff --git a/database/migrations/2022_08_26_112109_change_sites_projets_relation.php b/database/migrations/2022_08_26_112109_change_sites_projets_relation.php
new file mode 100644
index 0000000..e2b55d2
--- /dev/null
+++ b/database/migrations/2022_08_26_112109_change_sites_projets_relation.php
@@ -0,0 +1,44 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\DB;
+use Illuminate\Support\Facades\Schema;
+
+class ChangeSitesProjetsRelation extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        $project_siteIds = DB::table('project_site')->get();
+        Schema::table('projects', function (Blueprint $table) {
+            $table->foreignId('site_id')->nullable()->after('todo');
+        });
+        collect($project_siteIds)->map(function (object $project_site) {
+            DB::table('projects')->where('id', $project_site->project_id)
+                ->update(['site_id' => $project_site->site_id]);
+        });
+        Schema::table('projects', function (Blueprint $table) {
+            $table->foreignId('site_id')->nullable(false)->change();
+            $table->foreign('site_id')->on('sites')->references('id');
+        });
+        Schema::drop('project_site');
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::table('projects', function (Blueprint $table) {
+            $table->dropForeign('admins_post_id_foreign');
+            $table->dropColumn('post_id');
+        });
+    }
+}