diff --git a/src/Piwigo.Client/FileInfoExtensions.cs b/src/Piwigo.Client/FileInfoExtensions.cs
index 685204b..5e9f98e 100644
--- a/src/Piwigo.Client/FileInfoExtensions.cs
+++ b/src/Piwigo.Client/FileInfoExtensions.cs
@@ -4,7 +4,7 @@ namespace Piwigo.Client;
 
 public static class FileInfoExtensions
 {
-    public static async Task<string> CalculateMd5SumAsync(this FileInfo file, CancellationToken cancellationToken)
+    public static async Task<string> CalculateMd5SumAsync(this FileInfo file, CancellationToken cancellationToken = default)
     {
         using var md5 = MD5.Create();
         await using var stream = file.Open(FileMode.Open, FileAccess.Read, FileShare.Read);