diff --git a/lib/Service/AttachmentService.php b/lib/Service/AttachmentService.php
index a50ec7b67fe..9ddae0ad2ca 100644
--- a/lib/Service/AttachmentService.php
+++ b/lib/Service/AttachmentService.php
@@ -254,11 +254,11 @@ public function getAttachmentList(int $documentId, ?string $userId = null, ?Sess
 				'shareToken' => $shareToken,
 				'davPath' => '/' . implode('/', array_slice(explode('/', $node->getPath()), 3)),
 				'fullUrl' => $isImage
-					? $this->urlGenerator->linkToRouteAbsolute('text.Attachment.getImageFile') . $urlParamsBase . '&imageFileName=' . urlencode($name) . '&preferRawImage=1'
-					: $this->urlGenerator->linkToRouteAbsolute('text.Attachment.getMediaFile') . $urlParamsBase . '&mediaFileName=' . urlencode($name),
+					? $this->urlGenerator->linkToRouteAbsolute('text.Attachment.getImageFile') . $urlParamsBase . '&imageFileName=' . $name . '&preferRawImage=1'
+					: $this->urlGenerator->linkToRouteAbsolute('text.Attachment.getMediaFile') . $urlParamsBase . '&mediaFileName=' . $name,
 				'previewUrl' => $isImage
-					? $this->urlGenerator->linkToRouteAbsolute('text.Attachment.getImageFile') . $urlParamsBase . '&imageFileName=' . urlencode($name)
-					: $this->urlGenerator->linkToRouteAbsolute('text.Attachment.getMediaFilePreview') . $urlParamsBase . '&mediaFileName=' . urlencode($name),
+					? $this->urlGenerator->linkToRouteAbsolute('text.Attachment.getImageFile') . $urlParamsBase . '&imageFileName=' . $name
+					: $this->urlGenerator->linkToRouteAbsolute('text.Attachment.getMediaFilePreview') . $urlParamsBase . '&mediaFileName=' . $name,
 			];
 		}