diff --git a/Duplicati/WebserverCore/Middlewares/StaticFilesMiddleware.cs b/Duplicati/WebserverCore/Middlewares/StaticFilesMiddleware.cs
index 1d14d47b4..b93d2214a 100644
--- a/Duplicati/WebserverCore/Middlewares/StaticFilesMiddleware.cs
+++ b/Duplicati/WebserverCore/Middlewares/StaticFilesMiddleware.cs
@@ -59,7 +59,7 @@ public static class StaticFilesExtensions
         if (!prefix.EndsWith("/"))
             prefix += "/";
 
-        return fileContent.Replace("<base href=\"/\" \/>", $"<base href=\"{prefix}\" \/>");
+        return fileContent.Replace("<base href=\"/\" />", $"<base href=\"{prefix}\" />");
     }
 
     public static IApplicationBuilder UseDefaultStaticFiles(this WebApplication app, string webroot, IEnumerable<string> spaPaths)