diff --git a/lib/Alchemy/Phrasea/Application/Lightbox.php b/lib/Alchemy/Phrasea/Application/Lightbox.php
index 996e98a550..b0eca1a335 100644
--- a/lib/Alchemy/Phrasea/Application/Lightbox.php
+++ b/lib/Alchemy/Phrasea/Application/Lightbox.php
@@ -508,13 +508,19 @@ return call_user_func(
                         if ( ! $basket->getValidation()->getParticipant($user)->getCanAgree()) {
                             throw new ControllerException('You have not right to agree');
                         }
+
+                        $agreed = false;
                         /* @var $basket \Entities\Basket */
                         foreach ($basket->getElements() as $element) {
-                            if (null === $element->getUserValidationDatas($user)->getAgreement()) {
-                                throw new ControllerException(_('You have to give your feedback at least on one document to send a report'));
+                            if (null !== $element->getUserValidationDatas($user)->getAgreement()) {
+                                $agreed = true;
                             }
                         }
 
+                        if (!$agreed) {
+                            throw new ControllerException(_('You have to give your feedback at least on one document to send a report'));
+                        }
+
                         /* @var $basket \Entities\Basket */
                         $participant = $basket->getValidation()->getParticipant($user);