diff --git a/src/Util/Strings.php b/src/Util/Strings.php
index 5988cc89b..e1ec4ae50 100644
--- a/src/Util/Strings.php
+++ b/src/Util/Strings.php
@@ -220,6 +220,11 @@ class Strings
 	 */
 	public static function formatBytes(int $bytes, int $precision = 2): string
 	{
+		// If this method is called for an infinite (== unlimited) amount of bytes:
+		if ($bytes == INF) {
+			return INF;
+		}
+
 		$units = ['B', 'KB', 'MB', 'GB', 'TB'];
 		$bytes = max($bytes, 0);
 		$pow = floor(($bytes ? log($bytes) : 0) / log(1024));