diff --git a/app/Http/Requests/EndBorrowingRequest.php b/app/Http/Requests/EndBorrowingRequest.php
index a4a3a7f..939921c 100644
--- a/app/Http/Requests/EndBorrowingRequest.php
+++ b/app/Http/Requests/EndBorrowingRequest.php
@@ -30,7 +30,7 @@ public function rules()
     {
         return [
             'selectedBorrowings' => 'required|array',
-            'selectedBorrowings.*' => 'integer|distinct', // TODO: Prevent self-return of borrowing
+            'selectedBorrowings.*' => 'integer|distinct|no_self_return',
             'newInventoryItemsStatus' => [
                 'required',
                 'integer',
diff --git a/app/Providers/AppServiceProvider.php b/app/Providers/AppServiceProvider.php
index 462aa27..0c70d67 100644
--- a/app/Providers/AppServiceProvider.php
+++ b/app/Providers/AppServiceProvider.php
@@ -26,6 +26,7 @@ public function boot()
 
         Validator::extend('inventory_item_available', 'App\Validators\InventoryItemAvailable@validate');
         Validator::extend('inventory_item_not_borrowed', 'App\Validators\InventoryItemNotBorrowed@validate');
+        Validator::extend('no_self_return', 'App\Validators\NoSelfReturn@validate');
         Validator::extend('password_for', 'App\Validators\PasswordFor@validate');
         Validator::extend('unchanged_during_borrowing', 'App\Validators\UnchangedDuringBorrowing@validate');
         Validator::extend('not_changed_to_borrowed', 'App\Validators\NotChangedToBorrowed@validate');
diff --git a/app/Validators/NoSelfReturn.php b/app/Validators/NoSelfReturn.php
new file mode 100644
index 0000000..26977b5
--- /dev/null
+++ b/app/Validators/NoSelfReturn.php
@@ -0,0 +1,19 @@
+<?php
+
+namespace App\Validators;
+
+use App\Borrowing;
+use Illuminate\Support\Facades\Auth;
+
+class NoSelfReturn
+{
+    public function validate($attribute, $value, $parameters, $validator)
+    {
+        $borrowerId = Borrowing::find($value)->select('borrower_id')->first();
+        if ($borrowerId) {
+            $borrowerId = $borrowerId->borrower_id;
+            return $borrowerId !== Auth::user()->id;
+        }
+
+    }
+}
\ No newline at end of file
diff --git a/changelog.md b/changelog.md
index de91c48..01d6877 100644
--- a/changelog.md
+++ b/changelog.md
@@ -9,6 +9,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ### Added
 
+* End borrowing validation
+    * A user can't confirm the return of its own borrowings.
 * Edit inventory view
     * Minimal width of tables for better responsiveness.
 * Edit users view
@@ -18,7 +20,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
     * Users updating and deletion.
 * Edit users validation
     * Check for admin self-modification.
-    
+
 ### Removed
 
 * Edit inventory view
diff --git a/resources/lang/en/validation/endBorrowing.php b/resources/lang/en/validation/endBorrowing.php
index 4f510a2..7855e6b 100644
--- a/resources/lang/en/validation/endBorrowing.php
+++ b/resources/lang/en/validation/endBorrowing.php
@@ -2,5 +2,6 @@
 
 return [
     'selectedBorrowings.required' => 'Select borrowings to end.',
-    'selectedBorrowings.*.distinct' => 'The borrowing of :item by :borrower was selected in multiple times.'
+    'selectedBorrowings.*.distinct' => 'The borrowing of :item by :borrower was selected in multiple times.',
+    'selectedBorrowings.*.no_self_return' => 'A user can\'t confirm the return of one of its own borrowings.'
 ];
\ No newline at end of file
diff --git a/resources/lang/fr/validation/endBorrowing.php b/resources/lang/fr/validation/endBorrowing.php
index 09a762e..1d143dd 100644
--- a/resources/lang/fr/validation/endBorrowing.php
+++ b/resources/lang/fr/validation/endBorrowing.php
@@ -2,5 +2,6 @@
 
 return [
     'selectedBorrowings.required' => 'Sélectionnez des emprunts à terminer.',
-    'selectedBorrowings.*.distinct' => 'L\'emprunt du jeu :item par :borrower a été choisi plusieurs fois.'
+    'selectedBorrowings.*.distinct' => 'L\'emprunt du jeu :item par :borrower a été choisi plusieurs fois.',
+    'selectedBorrowings.*.no_self_return' => 'Un utilisateur ne peut pas valider le retour de son propre emprunt.'
 ];
\ No newline at end of file