diff --git a/src/Model/Profile.php b/src/Model/Profile.php
index b80c83881a..9c7aab54ad 100644
--- a/src/Model/Profile.php
+++ b/src/Model/Profile.php
@@ -813,12 +813,14 @@ class Profile
 
 	/**
 	 * Set the visitor cookies (see remote_user()) for signed HTTP requests
-	 (
+	 *
+	 * @param array $server The content of the $_SERVER superglobal
 	 * @return array Visitor contact array
+	 * @throws InternalServerErrorException
 	 */
-	public static function addVisitorCookieForHTTPSigner(): array
+	public static function addVisitorCookieForHTTPSigner(array $server): array
 	{
-		$requester = HTTPSignature::getSigner('', $_SERVER);
+		$requester = HTTPSignature::getSigner('', $server);
 		if (empty($requester)) {
 			return [];
 		}
diff --git a/src/Module/Photo.php b/src/Module/Photo.php
index c8e0656d2d..be2408edf2 100644
--- a/src/Module/Photo.php
+++ b/src/Module/Photo.php
@@ -77,7 +77,7 @@ class Photo extends BaseApi
 			throw new NotModifiedException();
 		}
 
-		Profile::addVisitorCookieForHTTPSigner();
+		Profile::addVisitorCookieForHTTPSigner($this->server);
 
 		$customsize = 0;
 		$square_resize = true;